Installation
3-16 SIMATIC TIWAY I Series 500 NIM User Manual
Series 500 NIM Self Tests (continued)Start of execution of the User-Initiated Self-Test will be signaled by the
illumination of the Test Mode LED, with all other LED indicators being
extinguished. Then, after approximately ten seconds, all LED indicators will
flash on and off for approximately two seconds. On completion of the test,
the Test LED will flash at a 2 HZ rate.
A PASS condition will be indicated by the following LED indicators
illuminating:
1. NIM GOOD
2. PC/NIM COMM GOOD
3. RECEIVE
4. TRANSMIT
5. TEST (flashing)
FAILURE conditions will be indicated by the following:
1. If the NIM GOOD LED indicator is extinguished, then a failure was
detected which is internal to the NIM.
2. If the PC/NIM COMM GOOD LED indicator is extinguished, then a
problem was found in attempting to communicate with a Series 500
controller.
3. If the RECEIVE LED indicator is extinguished, a failure was detected
on the top network port (Port A). This could be due to:
•A bad media interface
•A missing loopback connector (RS-232-C ports only)
4. If the TRANSMIT LED indicator is extinguished, a failure was
detected on the bottom port (Port B). This could also be due to:
•A bad media interface
•A missing loopback connector (RS-232-C ports only)
Following successful execution of the Self-Test, the network cable(s) should
be connected to the NIM, the NIM Reset button should be pressed and the
local/remote switch should be returned to the correct setting (for your
situation). This will reinitialize the NIM, and it will return to normal
operation.