S7 200 Modbus Slave Library Download

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The Siemens S7-200 driver works in conjunction with KEPServerEX to exchange data between OPC clients and Siemens S7-200 PLCs using the PPI (11 bit) or PPM (10 bit) protocol. It includes direct support for the EM241 Modem Module.

I guess you are looking for a Protocol convertor from PROFIBUS-DP to MODBUS or from PPI to MODBUS. Unfortunately this requires an extra piece of equipment, another card, and it is not easy to find it. I know Telvent is working on a Protocol convertor from MODBUS to PROFIBUS but they convert in the PROFIBUS master, not in the slave, anyway it will be easier in the slave. I have no idea about the other port of S7-200 PPI, but I think this will be even more difficult. Tell about final solution in the forum please. Hi, With the 'MicroWin add-on command library V1.1' you can directly communicate with the S7-200 on a Modbus RTU system. See ID 12330145 on WWW4.AD.SIEMENS.DE (search with search on that ID).

In ID 11859930 'S7-200 Micro-PLC Optional Software Packages' is the above Library for the S7-200 with the ordernumbers. The PPI port of the S7-200 = RS485 and may directly used for the Modbus communication. The new libraries installed with STEP 7-Micro/WIN32 Version 3.2 are supported on all 22x series CPUs, (CPU221, CPU222, CPU224, CPU226 and CPU226XM at present). The 21x series CPU's do not support the Add-On Instruction Library. Best Regards, Lowiek. You have clicked on the '?' Button for search help.

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