Experimental Physics and
Industrial Control System

Rod Nussbaumer <[email protected]> · Wed, 22 Feb 2012 09:19:58 -0800

At TRIUMF, we are using our own driver to talk to 400-series Siemens

PLCs. It uses asyn, and was modeled after Mark Rivers' modbus PLC

driver. The underlying communications protocol is the Siemens

FETCH/WRITE protocol over TCP/IP.

Rod Nussbaumer
ISAC Controls, TRIUMF
Vancouver, Canada

Konrad Gajewski wrote:

Hello everybody,

I'm new to EPICS and I am planning to control Siemens Simatic S7-200
PLC. I have looked in EPIC documentation and found at least two ways to
connect the PLC:

1. via MODBUS (Asyn) driver over the serial connection (using Siemens
MODBUS RTU library)
2. using S7plc driver via TCP/IP and a CP 243-1 Ethernet module.

The programming of the PLC is done using Step-7 Micro/WIN V4.0.
Unfortunately I can't open the example STEP 7 PLC project (for S7plc
driver) in Step-7 Micro/WIN.

Do you have any experience with such a configuration or maybe with
S7-1200? Are there any better options?

Thanks,
Konrad

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System