Need to connect a Modicon A250 PLC with an PAD250e (interface card from german company APEX) via Ethernet and Modbus/TCPIP protocol to SCADA system from CITECT.

From the PLC only digital values have to be read (no writing, etc.).
The Ethernet connection could be established, with PING command the interface card could be reached and answered correctly. The A250 with the interface card acts as a slave, the Citect Scada system is the master.
We are not so shure about understanding (and configuring) parameters like (virtual COM-port for Ethernet, slave address vs. Ethernet, ..) !

But when trying to read values from the A250 (we tried digital ones and also integer ones) always a timeout/?? oocured and when debugging with Citect Scada an error occured :
-----
Port PORT1_BOARD1 TCP Connection from 0.0.0.0ort(0) to 192.168.2.100ort(502)
Port PORT1_BOARD1 Connecting
Port PORT1_BOARD1 Event - FD_CONNECT
Port PORT1_BOARD1 connection OK
Port PORT1_BOARD1 Event - FD_WRITE
Port PORT1_BOARD1 Sent 12 bytes of data.
<00><01><00><00><00><06><FF><03><00><00><00><01>
Port PORT1_BOARD1 Event - FD_READ
Port PORT1_BOARD1 Received 11 bytes of data.
<00><01><00><00><00><05><FF><03><02><00><00>
Port PORT1_BOARD1 Error WSAECONNRESET on send()
Port PORT1_BOARD1 Error WSAECONNRESET on send()
------------------

My questions :
Who has screenshots or hints about how to configure the Citect Scada software ?
How to configure a Modbus slave, which has to be accessed via Ethernet ?
Are there tools for simulation :
* Simulation of an MODBUS server (via Ethernet)
* Simulation of an MODBUS client (via Ethernet)

 

You can find information about SCADA on the site
"WWW.SCADANEWS.COM":http://WWW.SCADANEWS.COM .

The Webmaster

 

Hi,
There is a Modbus simulator available from Calta Systems( RTU, TCPIP) having both Master & Slave functionality.

Praveen Mathew