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Troubleshooting
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MODBUS Device Address Conflict
Each MODBUS device must be configured with a unique address. Duplicate MODBUS IDs will cause indeterminate
errors
1. Check power supply for proper connection to annunciator unit. (Power LED inside unit will be ON if power supply is
connected properly). See Step 5.
All LEDs Are OFF
1. Check power supply for proper connection to annunciator unit. (Power LED inside unit will be ON if power supply is
connected properly). See Step 5.
LEDs for One or More ATSs Are All OFF
1. LEDs for ATS configured as "None" will all be OFF. See Configure Annunciator.
2. Are network terminations on ATS units connected?
3. Are all ATS units powered?Are all ATS units equipped with network interface cards?
4.Are all ATS units equipped with network interface cards?
Position and Source Availability LEDs Flash ON and OFF
This indicates that network connections are open between annunciator and corresponding ATS.
1. Is one of more ATS configured as present (not "None"), but not present on the network? See Configure Annunciator?
2. Are network terminations on remote ATS units connected?
3. Are all ATS units powered?
4.Are all ATS units equipped with optional MODBUS Interface Card (71R-2200 Modbus Card) and network cable connected?
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Specifications and Application
• Specifications and ordering information are in the brochures listed in Reference Documents.
• Installation Environment - Install in Network Telecommunication Facilities, OSP, or where NEC applies.
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