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I have an controllogix chassis with several modules as follows:
1. LOGIX5555 PROCESSOR UNIT the CAT.NO./SEEIES is 1756-L55/A, F/W REV is 1.4
2. Ethernet/IP 10/100Mb/s COMMUNICATIONS BRIDGE CATALOG/SERIES is 1756-ENBT /A, F/W REV is 3.6
3. CONTROL NET COMMUNICATION BRIDGE CAT.NO./SERIES is 1756-CNB/D, F/W REV is 5.45
4. DEVICENET COMMUNICATION MODULE CATALOG/SERIES 1756-DNB/B, F/W REV is 6.002
and several I/O modules.
When power on ,the 1756-CNB/D and 1756-DNB/B's OK status indicator are all solid red.1756-CNB/D's 4-Character display displays nothing,and 1756-DNB/B's 4-Character display displays : ERC ERROR ---4:2 s=0 d=0 PCB=0 f=0 e=0 h=0.
What's wrong with them? what should I do?
Thank you!!
1. LOGIX5555 PROCESSOR UNIT the CAT.NO./SEEIES is 1756-L55/A, F/W REV is 1.4
2. Ethernet/IP 10/100Mb/s COMMUNICATIONS BRIDGE CATALOG/SERIES is 1756-ENBT /A, F/W REV is 3.6
3. CONTROL NET COMMUNICATION BRIDGE CAT.NO./SERIES is 1756-CNB/D, F/W REV is 5.45
4. DEVICENET COMMUNICATION MODULE CATALOG/SERIES 1756-DNB/B, F/W REV is 6.002
and several I/O modules.
When power on ,the 1756-CNB/D and 1756-DNB/B's OK status indicator are all solid red.1756-CNB/D's 4-Character display displays nothing,and 1756-DNB/B's 4-Character display displays : ERC ERROR ---4:2 s=0 d=0 PCB=0 f=0 e=0 h=0.
What's wrong with them? what should I do?
Thank you!!