Siemens 500 NIM - Manual (Page 47)

Installation 3-12 SIMATIC TIWAY I Series 500 NIM User Manual
Setting the Dipswitches (continued)
A successful completion of these tests will leave only the NIM GOOD and
PC/NIM COMM GOOD indicators on. If the TEST LED remains on, run the
User Initiated Self-Test to determine the source of the error.
The reset switch should always be pressed after you change the
configuration or address selection dipswitches. If a 560/565 is connected to
the NIM, you should reset the NIM whenever you reconfigure the controller.
This can be done by pressing the NIM reset switch, or by sending a
Secondary Disconnect command from the host (which causes a reset to
occur), followed by a Secondary Connect command.
Test. This switch will cause a series of user initiated diagnostic tests to be
executed IF the local/remote switch is in the local position. It is important to
remember to disconnect all communication cables and to install loopback
connectors on any RS-232-C communication ports before running these
diagnostics.