Today is...
Monday, May 21, 2018
Welcome to Control.com, the global online
community of automation professionals.
Featured Video...
Featured Video
EtherCAT with CTC’s master lets your multivendor network play well together...
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
MODBUS Siemens CPU ET200SP
Modbus communication error

Hello

I am trying to send some information from my laptop which has a Modbus TCP IP simulator to the Siemens CPU ET200SP 6ES7512-1DK01-0AB0. I have connected the ethernet cable to port having hardware ID 67, and the other end of the cable is connected to the ethernet port of my laptop.

so basically i want to activate some values on the Modbus simulator software. then i want these values to be saved in the plc datablock. the error occurring is 809B. I have checked the ip address is correct.

If you have connected to the CPU programming port, I believe it will be looking for Profibus and Profinet protocols - one of the four Communication Modules will give you Modbus protocol (RTU) although at RS232/485 not ethernet.