# PLC: Siemens, Vipa, Logo

> Symcon documentation · English · generated on 2026-09-26  
> Index: https://www.symcon.de/en/llms.txt

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/

### Description
Programmable Logic Controllers (PLC) are independent electronic assemblies for controlling machines and systems. These work independently of a PC. The functions for control and regulation are stored directly in the PLC.

> **Note:** The following devices are supported by IP-Symcon:
>
> [Supported devices](sps-siemens-vipa-logo.md)

> **Note:** Due to the fact that PHP offers integers as the largest integer value, DWORDs (unsigend ints) can be read in IP-Symcon, but they are mapped to integers, which means that only the lower 31 bits can be evaluated.

### Integration in IP-Symcon
The Siemens PLCs can only be integrated via Ethernet connection.

> **Note:** The support of MPI and ProfiBus via LIBNODAVE is discontinued since version 4.0

> **Warning:** With newer S7 (1200/1500) the "Optimized block access" attribute must be deactivated. Further information can be found [HERE](https://snap7.sourceforge.net/snap7_client.html#1200_1500)

#### S7 Connection Configuration

The connection is configured via "TIA Portal" software (Totally Integrated Automation) from Siemens.

The following settings must be made.

* The IP address must be entered in the PROFINET interface (see screenshot)
* PN/IE subnet must be connected
* S7 connection to PROFINET must be inserted and the following points configured (see screenshot)
* Connection data must be entered in IP-Symcon (see screenshot)

__PROFINET Interface__

![S7 IP Setting](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/4ca55a5e85-1790424938/sps-siemens-s7-ipkonfiguration.png)

__S7 Connection__

![S7 S7 Connection Setting](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/e7723a4f8a-1790424938/sps-siemens-s7-s7verbindung.png)

__S7 Connection Secure__
If a Siemens PLC with additional security settings is used (e.g. S7-1517f), a connection can only be used with activated SIMATIC ACC on the PLC side. This means that the "SIMATIC-ACC" option must be activated for the local TSAP in the S7 connection of the PLC. This results in the remote TSAP 03.01 in the gateway configuration in IP-Symcon.

![S7 Secure](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/0f035a70aa-1790424938/sps-siemens-s7-s7verbindungsecure.png)

![TSAP Secure](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/3c933eded6-1790424938/sps-siemens-s7-tsapsecure.png)

#### Logo 7/8 Configuration

The configuration of the PLC and the gateway must be set up as follows.
Configuration via LOGO!Soft Comfort 8.1.

![Siemens logo configuration](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/3b33b92549-1790424938/sps-siemens-logokonfig.png)

The functions can then be tested. For a simple overview of whether everything is working correctly, the SoftComfort software offers an overview of the I/O states.
This can be called as follows.

![I/O states of LOGO](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/183904c2a0-1790424938/sps-siemens-logozustaende.png)

#### Logo 7/8 Configurator

If the Logo has been integrated properly, the respective memory addresses can be created as an instance via the Logo 7/8 Configurator. To do this, the respective input, output or marker must be selected and "Create" clicked on.

![Siemens Logo Configurator](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/4a286e6c90-1790424938/sps-siemens-logo-konfigurator.png)

As soon as a module is created in the configurator and the configuration button is pressed, a new dialog opens.
New instances are created in the object tree in the main category. These created instances can then be renamed accordingly and sorted elsewhere. It is also possible to call up the respective instance configuration via "Configure" in the configurator.

![Siemens logo flag](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/aaeb9f63e8-1790424938/sps-siemens-logo-merker.png)

### Example with TIA Portal
This example on the S7-1200 reflects 2 buttons, which should switch a light on/off independently of each other. At the same time, it should also be possible to control the light via IP-Symcon.

* Configure Main (OB1) as on the screenshot. (See screenshot)
* Load the program onto the PLC and start it
* Add "Siemens S7" instance in IPS-Symcon
* Configure the configuration page of the "Siemens S7" instance (see screenshot)
 * Address and bit result from the TIA Portal (see screenshot)
 * The type is specified under the "Area" field (see screenshot)
 * The type of variable in IP-Symcon is specified via unit (see screenshot)
 * The marker status is queried at the entered interval. (See screenshot)
* The test environment (ON/OFF) can be used to test directly whether the marker is switched correctly

With the XOR circuit and the marker, it is possible to switch over with a button and IP-Symcon will notice the variable change. Thus, IP-Symcon always shows the status of the light without having to use a separate variable to read out the PLC output. It is also possible for IP-Symcon to switch the light directly via the marker.
Better results can be achieved in this example if an AND (edge) is placed in front of the respective XOR to get just one cycle. However, whether this is required must be tested on site and is not included in this example.

![Siemens S7 Example](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/dd19edfc98-1790424938/sps-siemens-s7-beispiel.png)

### Example with Logo Soft Comfort
This example on the Logo 8 reflects 2 buttons, which should switch a light on/off independently of each other. At the same time, it should also be possible to control the light via IP-Symcon.

* Configure 2 button circuit diagram as shown on the screenshot. (See screenshot)
* Load the program onto the PLC and start it
* Add instance in IPS-Symcon "Logo Configurator" and configure interface as described above
* Create the desired variables using the configurator
* Deactivate the "Read only" option for switchable marker M2
* The type of variable in IP-Symcon is specified via unit
* The marker status is queried at the entered interval. (See screenshot)
* The test environment (ON/OFF) can be used to test directly whether the marker is switched correctly

With the XOR circuit and the marker, it is possible to switch over with a button and IP-Symcon will notice the variable change if the Q2 is set up. It is also possible for IP-Symcon to switch the light directly via marker M2. This is not possible via marker M1 because the logo does not support this in this configuration. Marker M2 acts as a switch in IP-Symcon and as a button in the Logo.

![Siemens logo example](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/fe50865d49-1790424938/sps-siemens-logo-beispiel.png)

![Flag M2 configuration](https://www.symcon.de/media/pages/service/dokumentation/modulreferenz/geraete/sps-siemens-vipa-logo/15cdf7157b-1790424938/sps-siemens-logo-m2konfiguration.png)

### Data types

| Data type | Sign      | Bit | Name IP-Symcon |
| --------- | --------- | --- | -------------- |
| BOOL      | unsigned  | 1   | Bit            |
| BYTE      | dependent | 8   | Char/Byte      |
| WORD      | dependent | 16  | Short/Word     |
| DWORD     | dependent | 32  | Integer/DWord  |
| SINT      | signed    | 8   | Char           |
| INT       | signed    | 16  | Short          |
| DINT      | signed    | 32  | Integer        |
| USINT     | unsigned  | 8   | Byte           |
| UINT      | unsigned  | 16  | Word           |
| UDINT     | unsigned  | 32  | DWord          |
| REAL      | signed    | 32  | Real           |
### Logo-VM-Addresses
The Logo has reserved fixed memory addresses in the VM memory above the 850th byte for inputs/outputs and markers.
These vary depending on the model (Logo7/8).
If the logo is to be read out with IP-Symcon, it is helpful to know these addresses.

A complete list can be found here: [Logo-VM-Addresses](sps-siemens-vipa-logo.md)

## Device list

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/device-list/

### Supported Gateways/Components

| Manufacturer | Device name    | Description                                                                                                                                                                                                                                          |
| ------------ | -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Siemens      | Logo 7         |                                                                                                                                                                                                                                                      |
| Siemens      | Logo 8         |                                                                                                                                                                                                                                                      |
| Siemens      | S7 200/300/400 | Connected via Ethernet                                                                                                                                                                                                                               |
| Siemens      | S7 1200/1500   | More information can be found [HERE](https://snap7.sourceforge.net/snap7_client.html#1200_1500)                                                                                                                                           |
| Siemens      | S7 1517f       | More information can be found [HERE](https://snap7.sourceforge.net/snap7_client.html#1200_1500)  Furthermore, the special [S7 Configuration](sps-siemens-vipa-logo.md) of the S7 must be considered |

## Logo-VM-Addresses

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/logovmaddresses/

The Logo has fixed memory addresses for inputs/outputs and markers.
These vary depending on the model (Logo7/8). ([Source LOGO!Soft Comfort Online Help](https://cache.industry.siemens.com/dl/files/807/100782807/att_924631/v1/Help_de-DE_de-DE.pdf#page=119) )

> **Note:** These addresses must be entered within the logo configuration in IP-Symcon under "Area address". The respective bits under "Bit"

### Logo 7

[Inputs Bit](sps-siemens-vipa-logo.md)
[Outputs Bit](sps-siemens-vipa-logo.md)
[Analog Inputs Word](sps-siemens-vipa-logo.md)
[Analog Outputs Word](sps-siemens-vipa-logo.md)
[Marker Bit](sps-siemens-vipa-logo.md)
[Analog Marker Word](sps-siemens-vipa-logo.md)

### Logo 8

[Inputs Bit](sps-siemens-vipa-logo.md)
[Outputs Bit](sps-siemens-vipa-logo.md)
[Analog Inputs Word](sps-siemens-vipa-logo.md)
[Analog Outputs Word](sps-siemens-vipa-logo.md)
[Marker Bit](sps-siemens-vipa-logo.md)
[Analog Marker Word](sps-siemens-vipa-logo.md)
[Network Inputs Bit](sps-siemens-vipa-logo.md)
[Network Outputs Bit](sps-siemens-vipa-logo.md)
[Analog Network Inputs Word](sps-siemens-vipa-logo.md)
[Analog Network Outputs Word](sps-siemens-vipa-logo.md)

#### Logo 7 Inputs Bit

| Input | Address | Bit |
| ----- | ------- | --- |
| I1    | 923     | 0   |
| I2    | 923     | 1   |
| I3    | 923     | 2   |
| I4    | 923     | 3   |
| I5    | 923     | 4   |
| I6    | 923     | 5   |
| I7    | 923     | 6   |
| I8    | 923     | 7   |
| I9    | 924     | 0   |
| I10   | 924     | 1   |
| I11   | 924     | 2   |
| I12   | 924     | 3   |
| I13   | 924     | 4   |
| I14   | 924     | 5   |
| I15   | 924     | 6   |
| I16   | 924     | 7   |
| I17   | 925     | 0   |
| I18   | 925     | 1   |
| I19   | 925     | 2   |
| I20   | 925     | 3   |
| I21   | 925     | 4   |
| I22   | 925     | 5   |
| I23   | 925     | 6   |
| I24   | 925     | 7   |

#### Logo 7 Outputs Bit

| Output | Address | Bit |
| ------ | ------- | --- |
| Q1     | 942     | 0   |
| Q2     | 942     | 1   |
| Q3     | 942     | 2   |
| Q4     | 942     | 3   |
| Q5     | 942     | 4   |
| Q6     | 942     | 5   |
| Q7     | 942     | 6   |
| Q8     | 942     | 7   |
| Q9     | 943     | 0   |
| Q10    | 943     | 1   |
| Q11    | 943     | 2   |
| Q12    | 943     | 3   |
| Q13    | 943     | 4   |
| Q14    | 943     | 5   |
| Q15    | 943     | 6   |
| Q16    | 943     | 7   |

#### Logo 7 Analog Inputs Word

| Input | Address | Bit |
| ----- | ------- | --- |
| AI1   | 926     | 0   |
| AI2   | 928     | 0   |
| AI3   | 930     | 0   |
| AI4   | 932     | 0   |
| AI5   | 934     | 0   |
| AI6   | 936     | 0   |
| AI7   | 938     | 0   |
| AI8   | 940     | 0   |

#### Logo 7 Analog Outputs Word

| Word | Address | Bit |
| ---- | ------- | --- |
| AQ1  | 944     | 0   |
| AQ2  | 946     | 0   |

#### Logo 7 Marker Bit

| Marker | Address | Bit |
| ------ | ------- | --- |
| M1     | 948     | 0   |
| M2     | 948     | 1   |
| M3     | 948     | 2   |
| M4     | 948     | 3   |
| M5     | 948     | 4   |
| M6     | 948     | 5   |
| M7     | 948     | 6   |
| M8     | 948     | 7   |
| M9     | 949     | 0   |
| M10    | 949     | 1   |
| M11    | 949     | 2   |
| M12    | 949     | 3   |
| M13    | 949     | 4   |
| M14    | 949     | 5   |
| M15    | 949     | 6   |
| M16    | 949     | 7   |
| M17    | 950     | 0   |
| M18    | 950     | 1   |
| M19    | 950     | 2   |
| M20    | 950     | 3   |
| M21    | 950     | 4   |
| M22    | 950     | 5   |
| M23    | 950     | 6   |
| M24    | 950     | 7   |
| M25    | 951     | 0   |
| M26    | 951     | 1   |
| M27    | 951     | 2   |

#### Logo 7 Analog Marker Word

| Marker | Address | Bit |
| ------ | ------- | --- |
| AM1    | 952     | 0   |
| AM2    | 954     | 0   |
| AM3    | 956     | 0   |
| AM4    | 958     | 0   |
| AM5    | 960     | 0   |
| AM6    | 962     | 0   |
| AM7    | 964     | 0   |
| AM8    | 966     | 0   |
| AM9    | 968     | 0   |
| M10    | 970     | 0   |
| AM11   | 972     | 0   |
| AM12   | 974     | 0   |
| AM13   | 976     | 0   |
| AM14   | 978     | 0   |
| AM15   | 980     | 0   |
| AM16   | 982     | 0   |

### Logo 8

#### Logo 8 Inputs Bit

| Input | Address | Bit |
| ----- | ------- | --- |
| I1    | 1024    | 0   |
| I2    | 1024    | 1   |
| I3    | 1024    | 2   |
| I4    | 1024    | 3   |
| I5    | 1024    | 4   |
| I6    | 1024    | 5   |
| I7    | 1024    | 6   |
| I8    | 1024    | 7   |
| I9    | 1025    | 0   |
| I10   | 1025    | 1   |
| I11   | 1025    | 2   |
| I12   | 1025    | 3   |
| I13   | 1025    | 4   |
| I14   | 1025    | 5   |
| I15   | 1025    | 6   |
| I16   | 1025    | 7   |
| I17   | 1026    | 0   |
| I18   | 1026    | 1   |
| I19   | 1026    | 2   |
| I20   | 1026    | 3   |
| I21   | 1026    | 4   |
| I22   | 1026    | 5   |
| I23   | 1026    | 6   |
| I24   | 1026    | 7   |

#### Logo 8 Outputs Bit

| Output | Address | Bit |
| ------ | ------- | --- |
| Q1     | 1064    | 0   |
| Q2     | 1064    | 1   |
| Q3     | 1064    | 2   |
| Q4     | 1064    | 3   |
| Q5     | 1064    | 4   |
| Q6     | 1064    | 5   |
| Q7     | 1064    | 6   |
| Q8     | 1064    | 7   |
| Q9     | 1065    | 0   |
| Q10    | 1065    | 1   |
| Q11    | 1065    | 2   |
| Q12    | 1065    | 3   |
| Q13    | 1065    | 4   |
| Q14    | 1065    | 5   |
| Q15    | 1065    | 6   |
| Q16    | 1065    | 7   |
| Q17    | 1066    | 0   |
| Q18    | 1066    | 1   |
| Q19    | 1066    | 2   |
| Q20    | 1066    | 3   |

#### Logo 8 Analog Inputs Word

| Input | Address | Bit |
| ----- | ------- | --- |
| AI1   | 1032    | 0   |
| AI2   | 1034    | 0   |
| AI3   | 1036    | 0   |
| AI4   | 1038    | 0   |
| AI5   | 1040    | 0   |
| AI6   | 1042    | 0   |
| AI7   | 1044    | 0   |
| AI8   | 1046    | 0   |

#### Logo 8 Analog Outputs Word

| Outputs | Address | Bit |
| ------- | ------- | --- |
| AQ1     | 1072    | 0   |
| AQ2     | 1074    | 0   |
| AQ3     | 1076    | 0   |
| AQ4     | 1078    | 0   |
| AQ5     | 1080    | 0   |
| AQ6     | 1082    | 0   |
| AQ7     | 1084    | 0   |
| AQ8     | 1086    | 0   |

#### Logo 8 Marker Bit

| Marker | Address | Bit |
| ------ | ------- | --- |
| M1     | 1104    | 0   |
| M2     | 1104    | 1   |
| M3     | 1104    | 2   |
| M4     | 1104    | 3   |
| M5     | 1104    | 4   |
| M6     | 1104    | 5   |
| M7     | 1104    | 6   |
| M8     | 1104    | 7   |
| M9     | 1105    | 0   |
| M10    | 1105    | 1   |
| M11    | 1105    | 2   |
| M12    | 1105    | 3   |
| M13    | 1105    | 4   |
| M14    | 1105    | 5   |
| M15    | 1105    | 6   |
| M16    | 1105    | 7   |
| M17    | 1106    | 0   |
| M18    | 1106    | 1   |
| M19    | 1106    | 2   |
| M20    | 1106    | 3   |
| M21    | 1106    | 4   |
| M22    | 1106    | 5   |
| M23    | 1106    | 6   |
| M24    | 1106    | 7   |
| M25    | 1107    | 0   |
| M26    | 1107    | 1   |
| M27    | 1107    | 2   |
| M28    | 1107    | 3   |
| M29    | 1107    | 4   |
| M30    | 1107    | 5   |
| M31    | 1107    | 6   |
| M32    | 1107    | 7   |
| M33    | 1108    | 0   |
| M34    | 1108    | 1   |
| M35    | 1108    | 2   |
| M36    | 1108    | 3   |
| M37    | 1108    | 4   |
| M38    | 1108    | 5   |
| M39    | 1108    | 6   |
| M40    | 1108    | 7   |
| M41    | 1109    | 0   |
| M42    | 1109    | 1   |
| M43    | 1109    | 2   |
| M44    | 1109    | 3   |
| M45    | 1109    | 4   |
| M46    | 1109    | 5   |
| M47    | 1109    | 6   |
| M48    | 1109    | 7   |
| M49    | 1110    | 0   |
| M50    | 1110    | 1   |
| M51    | 1110    | 2   |
| M52    | 1110    | 3   |
| M53    | 1110    | 4   |
| M54    | 1110    | 5   |
| M55    | 1110    | 6   |
| M56    | 1110    | 7   |
| M57    | 1111    | 0   |
| M58    | 1111    | 1   |
| M59    | 1111    | 2   |
| M60    | 1111    | 3   |
| M61    | 1111    | 4   |
| M62    | 1111    | 5   |
| M63    | 1111    | 6   |
| M64    | 1111    | 7   |

#### Logo 8 Analog Marker Word
| Marker | Address | Bit |
| ------ | ------- | --- |
| AM1    | 1118    | 0   |
| AM2    | 1120    | 0   |
| AM3    | 1122    | 0   |
| AM4    | 1124    | 0   |
| AM5    | 1126    | 0   |
| AM6    | 1128    | 0   |
| AM7    | 1130    | 0   |
| AM8    | 1132    | 0   |
| AM9    | 1134    | 0   |
| AM10   | 1136    | 0   |
| AM11   | 1138    | 0   |
| AM12   | 1140    | 0   |
| AM13   | 1142    | 0   |
| AM14   | 1144    | 0   |
| AM15   | 1146    | 0   |
| AM16   | 1148    | 0   |
| AM17   | 1150    | 0   |
| AM18   | 1152    | 0   |
| AM19   | 1154    | 0   |
| AM20   | 1156    | 0   |
| AM21   | 1158    | 0   |
| AM22   | 1160    | 0   |
| AM23   | 1162    | 0   |
| AM24   | 1164    | 0   |
| AM25   | 1166    | 0   |
| AM26   | 1168    | 0   |
| AM27   | 1170    | 0   |
| AM28   | 1172    | 0   |
| AM29   | 1174    | 0   |
| AM30   | 1176    | 0   |
| AM31   | 1178    | 0   |
| AM32   | 1180    | 0   |
| AM33   | 1182    | 0   |
| AM34   | 1184    | 0   |
| AM35   | 1186    | 0   |
| AM36   | 1188    | 0   |
| AM37   | 1190    | 0   |
| AM38   | 1192    | 0   |
| AM39   | 1194    | 0   |
| AM40   | 1196    | 0   |
| AM41   | 1198    | 0   |
| AM42   | 1200    | 0   |
| AM43   | 1202    | 0   |
| AM44   | 1204    | 0   |
| AM45   | 1206    | 0   |
| AM46   | 1208    | 0   |
| AM47   | 1210    | 0   |
| AM48   | 1212    | 0   |
| AM49   | 1214    | 0   |
| AM50   | 1216    | 0   |
| AM51   | 1218    | 0   |
| AM52   | 1220    | 0   |
| AM53   | 1222    | 0   |
| AM54   | 1224    | 0   |
| AM55   | 1226    | 0   |
| AM56   | 1228    | 0   |
| AM57   | 1230    | 0   |
| AM58   | 1232    | 0   |
| AM59   | 1234    | 0   |
| AM60   | 1236    | 0   |
| AM61   | 1238    | 0   |
| AM62   | 1240    | 0   |
| AM63   | 1242    | 0   |
| AM64   | 1244    | 0   |

#### Logo 8 Network Inputs Bit

| Input | Address | Bit |
| ----- | ------- | --- |
| NI1   | 1246    | 0   |
| NI2   | 1246    | 1   |
| NI3   | 1246    | 2   |
| NI4   | 1246    | 3   |
| NI5   | 1246    | 4   |
| NI6   | 1246    | 5   |
| NI7   | 1246    | 6   |
| NI8   | 1246    | 7   |
| NI9   | 1247    | 0   |
| NI10  | 1247    | 1   |
| NI11  | 1247    | 2   |
| NI12  | 1247    | 3   |
| NI13  | 1247    | 4   |
| NI14  | 1247    | 5   |
| NI15  | 1247    | 6   |
| NI16  | 1247    | 7   |
| NI17  | 1248    | 0   |
| NI18  | 1248    | 1   |
| NI19  | 1248    | 2   |
| NI20  | 1248    | 3   |
| NI21  | 1248    | 4   |
| NI22  | 1248    | 5   |
| NI23  | 1248    | 6   |
| NI24  | 1248    | 7   |
| NI25  | 1249    | 0   |
| NI26  | 1249    | 1   |
| NI27  | 1249    | 2   |
| NI28  | 1249    | 3   |
| NI29  | 1249    | 4   |
| NI30  | 1249    | 5   |
| NI31  | 1249    | 6   |
| NI32  | 1249    | 7   |
| NI33  | 1250    | 0   |
| NI34  | 1250    | 1   |
| NI35  | 1250    | 2   |
| NI36  | 1250    | 3   |
| NI37  | 1250    | 4   |
| NI38  | 1250    | 5   |
| NI39  | 1250    | 6   |
| NI40  | 1250    | 7   |
| NI41  | 1251    | 0   |
| NI42  | 1251    | 1   |
| NI43  | 1251    | 2   |
| NI44  | 1251    | 3   |
| NI45  | 1251    | 4   |
| NI46  | 1251    | 5   |
| NI47  | 1251    | 6   |
| NI48  | 1251    | 7   |
| NI49  | 1252    | 0   |
| NI50  | 1252    | 1   |
| NI51  | 1252    | 2   |
| NI52  | 1252    | 3   |
| NI53  | 1252    | 4   |
| NI54  | 1252    | 5   |
| NI55  | 1252    | 6   |
| NI56  | 1252    | 7   |
| NI57  | 1253    | 0   |
| NI58  | 1253    | 1   |
| NI59  | 1253    | 2   |
| NI60  | 1253    | 3   |
| NI61  | 1253    | 4   |
| NI62  | 1253    | 5   |
| NI63  | 1253    | 6   |
| NI64  | 1253    | 7   |

#### Logo 8 Network Outputs Bit

| Output | Address | Bit |
| ------ | ------- | --- |
| NQ1    | 1390    | 0   |
| NQ2    | 1390    | 1   |
| NQ3    | 1390    | 2   |
| NQ4    | 1390    | 3   |
| NQ5    | 1390    | 4   |
| NQ6    | 1390    | 5   |
| NQ7    | 1390    | 6   |
| NQ8    | 1390    | 7   |
| NQ9    | 1391    | 0   |
| NQ10   | 1391    | 1   |
| NQ11   | 1391    | 2   |
| NQ12   | 1391    | 3   |
| NQ13   | 1391    | 4   |
| NQ14   | 1391    | 5   |
| NQ15   | 1391    | 6   |
| NQ16   | 1391    | 7   |
| NQ17   | 1392    | 0   |
| NQ18   | 1392    | 1   |
| NQ19   | 1392    | 2   |
| NQ20   | 1392    | 3   |
| NQ21   | 1392    | 4   |
| NQ22   | 1392    | 5   |
| NQ23   | 1392    | 6   |
| NQ24   | 1392    | 7   |
| NQ25   | 1393    | 0   |
| NQ26   | 1393    | 1   |
| NQ27   | 1393    | 2   |
| NQ28   | 1393    | 3   |
| NQ29   | 1393    | 4   |
| NQ30   | 1393    | 5   |
| NQ31   | 1393    | 6   |
| NQ32   | 1393    | 7   |
| NQ33   | 1394    | 0   |
| NQ34   | 1394    | 1   |
| NQ35   | 1394    | 2   |
| NQ36   | 1394    | 3   |
| NQ37   | 1394    | 4   |
| NQ38   | 1394    | 5   |
| NQ39   | 1394    | 6   |
| NQ40   | 1394    | 7   |
| NQ41   | 1395    | 0   |
| NQ42   | 1395    | 1   |
| NQ43   | 1395    | 2   |
| NQ44   | 1395    | 3   |
| NQ45   | 1395    | 4   |
| NQ46   | 1395    | 5   |
| NQ47   | 1395    | 6   |
| NQ48   | 1395    | 7   |
| NQ49   | 1396    | 0   |
| NQ50   | 1396    | 1   |
| NQ51   | 1396    | 2   |
| NQ52   | 1396    | 3   |
| NQ53   | 1396    | 4   |
| NQ54   | 1396    | 5   |
| NQ55   | 1396    | 6   |
| NQ56   | 1396    | 7   |
| NQ57   | 1397    | 0   |
| NQ58   | 1397    | 1   |
| NQ59   | 1397    | 2   |
| NQ60   | 1397    | 3   |
| NQ61   | 1397    | 4   |
| NQ62   | 1397    | 5   |
| NQ63   | 1397    | 6   |
| NQ64   | 1397    | 7   |

#### Logo 8 Analog Network Inputs Word

| Input | Address | Bit |
| ----- | ------- | --- |
| NAI1  | 1262    | 0   |
| NAI2  | 1264    | 0   |
| NAI3  | 1266    | 0   |
| NAI4  | 1268    | 0   |
| NAI5  | 1270    | 0   |
| NAI6  | 1272    | 0   |
| NAI7  | 1274    | 0   |
| NAI8  | 1276    | 0   |
| NAI9  | 1278    | 0   |
| NAI10 | 1280    | 0   |
| NAI11 | 1282    | 0   |
| NAI12 | 1284    | 0   |
| NAI13 | 1286    | 0   |
| NAI14 | 1288    | 0   |
| NAI15 | 1290    | 0   |
| NAI16 | 1292    | 0   |
| NAI17 | 1294    | 0   |
| NAI18 | 1296    | 0   |
| NAI19 | 1298    | 0   |
| NAI20 | 1300    | 0   |
| NAI21 | 1302    | 0   |
| NAI22 | 1304    | 0   |
| NAI23 | 1306    | 0   |
| NAI24 | 1308    | 0   |
| NAI25 | 1310    | 0   |
| NAI26 | 1312    | 0   |
| NAI27 | 1314    | 0   |
| NAI28 | 1316    | 0   |
| NAI29 | 1318    | 0   |
| NAI30 | 1320    | 0   |
| NAI31 | 1322    | 0   |
| NAI32 | 1324    | 0   |

#### Logo 8 Analog Network Outputs Word

| Output | Address | Bit |
| ------ | ------- | --- |
| NAQ1   | 1406    | 0   |
| NAQ2   | 1408    | 0   |
| NAQ3   | 1410    | 0   |
| NAQ4   | 1412    | 0   |
| NAQ5   | 1414    | 0   |
| NAQ6   | 1416    | 0   |
| NAQ7   | 1418    | 0   |
| NAQ8   | 1420    | 0   |
| NAQ9   | 1422    | 0   |
| NAQ10  | 1424    | 0   |
| NAQ11  | 1426    | 0   |
| NAQ12  | 1428    | 0   |
| NAQ13  | 1430    | 0   |
| NAQ14  | 1432    | 0   |
| NAQ15  | 1434    | 0   |
| NAQ16  | 1436    | 0   |

## S7_RequestRead

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-requestread/

`bool S7_RequestRead(int $InstanceID)`

performs a read operation on a device

**Parameters**

- `$InstanceID` (int): ID of the device to be switched

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

ID of the device to be switched

**Example**

```php
// Read device
S7_RequestRead(12345);
```

## S7_Write

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-write/

`bool S7_Write(int $InstanceID, float $Value)`

writes a value to the configured address

**Parameters**

- `$InstanceID` (int): ID of the device to be switched
- `$Value` (float): 32-bit floating point value according to IEEE754 or integer

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

32-bit floating point value according to IEEE754 or integer

**Example**

```php
// Float value
S7_Write(12345, 23.5);

// Integer
S7_Write(12345, 123);
```

## S7_WriteBit

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-writebit/

`bool S7_WriteBit(int $InstanceID, bool $Value)`

**Parameters**

- `$InstanceID` (int): ID of the device to be switched
- `$Value` (bool): __TRUE__ for On, __FALSE__ for Off

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

__TRUE__ for On, __FALSE__ for Off

**Example**

```php
S7_WriteBit(12345, true); //Turn on device
```

## S7_WriteByte

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-writebyte/

`bool S7_WriteByte(int $InstanceID, int $Value)`

**Parameters**

- `$InstanceID` (int): ID of the device to be switched
- `$Value` (int): 0-255

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

0-255

**Example**

```php
S7_WriteByte(12345, 123);
```

## S7_WriteChar

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-writechar/

`bool S7_WriteChar(int $InstanceID, int $Value)`

_Requires Symcon >= 4.4_

Set the address with the ID __InstanceID__ to __Value__

**Parameters**

- `$InstanceID` (int): ID of the device to be switched
- `$Value` (int): -128 to 127

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

-128 to 127

**Example**

```php
S7_WriteChar(12345, -123);
```

## S7_WriteDWord

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-writedword/

`bool S7_WriteDWord(int $InstanceID, int $Value)`

**Parameters**

- `$InstanceID` (int): ID of the device to be switched
- `$Value` (int): 0-4294967295

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

0-4294967295

**Example**

```php
S7_WriteDWord(12345, 123);
```

## S7_WriteInteger

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-writeinteger/

`bool S7_WriteInteger(int $InstanceID, int $Value)`

**Parameters**

- `$InstanceID` (int): ID of the device to be switched
- `$Value` (int): -2147483648 bis 2147483647

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

-2147483648 bis 2147483647

**Example**

```php
S7_WriteInteger(12345, -123);
```

## S7_WriteReal

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-writereal/

`bool S7_WriteReal(int $InstanceID, float $Value)`

**Parameters**

- `$InstanceID` (int): ID of the device to be switched
- `$Value` (float): 64bit floating point value according to IEEE754

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

64bit floating point value according to IEEE754

**Example**

```php
S7_WriteReal(12345, 23.5);
```

## S7_WriteShort

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-writeshort/

`bool S7_WriteShort(int $InstanceID, int $Value)`

_Requires Symcon >= 4.4_

Set the address with the ID __InstanceID__ to __Value__

**Parameters**

- `$InstanceID` (int): ID of the device to be switched
- `$Value` (int): -32768 to 32767

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

-32768 to 32767

**Example**

```php
S7_WriteShort(12345, -123);
```

## S7_WriteWord

Source: https://www.symcon.de/en/service/documentation/module-reference/devices/sps-siemens-vipa-logo/s7-writeword/

`bool S7_WriteWord(int $InstanceID, int $Value)`

**Parameters**

- `$InstanceID` (int): ID of the device to be switched
- `$Value` (int): 0-65535

**Returns** (bool): If the command succeeds, it returns __TRUE__, otherwise __FALSE__.

0-65535

**Example**

```php
S7_WriteWord(12345, 123);
```