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Status Area and Troubleshooting Section 9-2
9-2-3 CVM1 and CV-series Controller Link Units
The status of the Unit and Network is indicated in the following manner in the
PLC.
Status Area
Error Information: CIO 1500 + 25 × (Unit No.)
Polling Node Address, Startup Node Address: CIO 1500 + 25
× (Unit No.) + 1
Network Participation Status: CIO 1500 + 25
× (Unit No.) + 2, + 3
Local Data Link Participation Status: CIO 1500 + 25
× (Unit No.) + 6
Note Data link status is valid only when the local node is participating in the data
link. Confirm that the Local Data Link Active Bit is ON before referencing the
data link status.
1: Network parameter error (In PLC's EEPROM)
1: Data link table error (in PLC's EEPROM)
1: Routing table error (in PLC's EEPROM)
1: PLC system setting error
1: EEPROM error
1: Duplicate node address setting error
1: Inconsistent network parameters
1: Communications controller send error
1: Error lo
g
exists
Polling node address Startup node address
Each node address is displayed in 2-digit BCD.
The numbers in the squares indicate node addresses.
The corresponding node participation status is as follows:
0: Not part of the network
1: Part of the network
+ 2
+ 3
1: Local node data link participating
0: Local node data link not participating or data link
inactive