Omron DRM21 module prompts D5 error, how to do?

Reason: registered in the scan list from the station does not exist or is a local master node number is registered in the scan list of the master station.
 
Countermeasures:
 
① initial commissioning or increase / decrease the slave node:
 
a. Check the baud rate from the master station, you need to set the same;
b. Using CX-Integrator software scans the table to re-register the master module.
 
② device was originally normal communication is done without any changes, the sudden appearance of an error message D5:
 
a. Check the wiring of the communication cable is loose;
b. In the two terminals of the network whether the terminating resistor;
c. Check the current speed and distance network, consider reducing the baud rate of the network, using 125Kbps baud rate for communication;
d. DeviceNet special cable network recommended;
e. Check around whether the communication device has a signal interference.