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Why is the Magelis HMIS5T getting a timeout error when communicating to M221 over Modbus/TCP?

Issue:
Why is the Magelis HMIS5T getting a timeout error when communicating to M221 over Modbus/TCP?  

Product Line:
HMIGTO/GTU/STO/STU, XBTGC/GK/GT/GTW

Resolution:
If the IP address for the Modbus Equipment in Vijeo Designer matches the M221, and the Magelis and controller are on the same network, take a look in the Somachine Basic, under the Configuration tab in the ETH1 node.  Make sure the option "Modbus server enabled" is checked.  If not checked, check the box and download to the controller.
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