Micromod Micro-DCI: 53MC5000 MicroLink - Manual (Page 20)

6.0 MICROLINK TROUBLESHOOTING
In the event a problem should occur, check each item listed as follows:
1. Damaged Cables:
Test each cable for opens and shorts using an oscilloscope. Ground the scope to ITB TB1
pin 5 of one terminator and observe the signals at TB1 pin 3 and pin 4. Both signals
should be in the range of 1 to 4 volts with respect to pin 5 and should have a peak to peak
amplitude of at least one volt.
2. Terminator Resistances:
Networks with fewer than twelve nodes often require modifications to the terminators as
stated in sub-section 4.2.
3. Configuration Settings:
No two nodes can have the same address. All nodes must be set to the same MicroLink
mode. The SUPERVISOR-PC unit, and PC unit with the 53WS5000 product package in-
stalled, must both be reset if the mode or address has been changed. It is not necessary
to reset the Process Control Station after changing the mode or address.
Section 6. MicroLink Troubleshooting
19