Nachi RMU20-20 Instruction Manual page 152

5.3Settings for the safety PLC
14 Select the "General" tab and press "..." button displayed on the right side of the "Safety
Network Number".
Press "Set" button.
15
If the settings are correct, the SNN (Safety Network Number) is set and the communication will
start.
5-8
If the "Set" button cannot be pressed, please check that the RMU is connected
POINT
to the network.
And, if the Safety Network Number is already set, the same thing will occur. In
this case, reset the Safety Network Number if necessary. The reset operation
can be executed by pressing the "Reset Ownership" button in the "Safety" tab.