---
title: Communication Siemens S7-200 and JMobile PC Run. using Simatic S7-PPI
description: Communication between Siemens S7-200 and JMobile PC Runtime devices using Simatic S7-PPI protocol
---

[F.A.Q. ](https://www.exorint.com/faq)

# [Communication Siemens S7-200 and JMobile PC Run. using Simatic S7-PPI](https://www.exorint.com/faq/2017/06/20/communication-between-jmobile-pc-runtime-and-siemens-s7-200-devices-using-simatic-s7-ppi-protocol-2)

 Written by [Mark Olding](https://www.exorint.com/faq/author/mark-olding) | Sep 21, 2023 8:20:08 AM

### What to know

JMobile PC Runtime can communicate with Siemens Simatic S7-200 PLC family using the Simatic S7-PPI communication protocol.

**Note:** JMobile Suite version 1.91.00.327 or newer is required.

The PPI communication is done trough a 485 2 wires connection, for this reason the communication can be established in two ways:

- Direct trough a 485 port of a PC.

**Note:** we suggest the use of an Exor Industrial PC of eTOP-EPC, eTOP-IPC or eCC series with integrated multimode 485/422 port. We can not guarantee the correct functionality of a third part device, in these cases a test at end customer side may be required.

- Trough a standard 232 port of a PC, using an external 232 to 485 converter.

**Note:** the connection using a Siemens PC/PPI Cable programming device has been successfully tested, the use of a third part external converter may require a test at end customer side.

### What to do

If the device used for the communication is an eTOP-EPC, eTOP-IPC or eCC industrial PC follow the below suggestions to set-up a correct communication.

**COM Port setup**

The COM ports available on the devices are multimode, it is necessary to set-up the port used to work in the correct mode, in case of S7-PPI communication the port must be set to **RS485 AUTO** mode.  
 The COM port setup is done trough the BIOS of the PC, to access the BIOS connect a keyboard to the PC and press F2 key at PC startup.

**Note:** the COM port numbering present into the BIOS is shifted respect to the numbering reported on the PC COM ports, the PCCOM Port 1 corresponds to COM 0 into the BIOS, PC COM Port 2 to BIOS COM 1 and so on.

**Cabling**

The communication cable between eTOP-EPC, eTOP-IPC, eCC industrial PC and the S7-200 PLC must be done according to the scheme reported below.

**Note:**

### Applies to

Jmobile Suite version 1.91.00..27 or newer  
 Exor eTOP-EPC, eTOP-IPC, eCC industrial PC lines

[View full post](https://www.exorint.com/faq/2017/06/20/communication-between-jmobile-pc-runtime-and-siemens-s7-200-devices-using-simatic-s7-ppi-protocol-2)

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