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Hi all,
I have aproject which requires my S7-200 to communicate with the PDMS through Modbus communcation.
As I understand from the S7-200 manual, the PLC can act as a master (sending Data), and a slave (Recieving data), Can the PLC work as both sending and recieving data at the same time, or its a totally different concept.
I must send the PDMS the folloing points:
Inputs f the PLC (total of 55 inputs).
Outputs of the PLC (total of 40 outputs).
Memory locations (regesters I use them in my control and I must inform the PDMS about them).
I must recieve from the PDMS about 10 control points.
Any one can help me with that,
Does any one have sample programs using the modbus can share it.
if this tool cant be used with CPU 224xp, is there any tool to do that.
Thanks.
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I have aproject which requires my S7-200 to communicate with the PDMS through Modbus communcation.
Modbus Organization Replaces Master-Slave with Client-Server: How to know Modbus Slave is still receiving values: Modbus RTU Multiple Slave Wiring Connections: S7-200 MODBUS slave Mode: S7-200 modbus slave.
Modbus Freeware
I must send some data to the PDMS, and recieve other control signals from the PDMS.Simply Modbus Download
![S7 200 Modbus Slave Library Download S7 200 Modbus Slave Library Download](/uploads/1/2/6/4/126430193/319776507.jpg)
I must send the PDMS the folloing points:
Inputs f the PLC (total of 55 inputs).
Download Modbus Poll
Outputs of the PLC (total of 40 outputs).
Memory locations (regesters I use them in my control and I must inform the PDMS about them).
I must recieve from the PDMS about 10 control points.
Any one can help me with that,
Does any one have sample programs using the modbus can share it.
Modbus Basics Pdf
I found a tool here in the forums for testing the modbus communications, but its for **OPEN MODBUS / TCP Communication via CP343-1 and CP443-1**, is it adifferent protocol, can I use it with S7-200 CPU 224xp.if this tool cant be used with CPU 224xp, is there any tool to do that.
Thanks.