Siemens SIMATIC ET 200pro Manual page 25

In order to prevent damage to your ET 200pro, always deactivate the outputs before you
remove any connection modules.
Communication faults
If you are unable to communicate with the ET 200pro EtherNet/IP module, ensure that you
have completed the following :
● Check that the appropriate link LED, P1 or P2, is green. If it is off, check the cabling to the
network switch. The link LED must be on before proceeding to the next step.
● If the Network Status LED is off, the IP address is not set. If the module is using DHCP
(factory default), check that the DHCP server is set up and running correctly. The
Network Status LED must be flashing green before proceeding to the next step.
● Perform a List Identity from the EIP ET200 Configuration Tool.
● Ensure that the IP address is unique on the network.
● Ensure that the IP address of the communication partner is on the same IP subnet.
ET 200pro distributed I/O EtherNet/IP interface module
Manual, 03/2016, A5E32861915-AB
CAUTION
The ET 200pro EtherNet/IP module
3.4 Faults
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