Redundancy case in the cross-communication
The SDC has Phase 0 in the cross-communication ring and can receive master-sync telegrams.
Phase start is however, not possible as the cross-communication master is in Phase 4. Error 512 is only generated if cross communication is desired, i.e. if:
ID1102 "VL-Mode", Bit5 = 1 and
ID1109 "VL-Inter_Section" = 1
Source And Remedy
Reset or short-term voltage failure at the SDC
Identifier
ID1005 "SIS-Phase[Axle = 2]" = 0 and
ID257 "optical fibre distortion[Axle = 2]" < 70%
With SDC 3.02 as master:
ID1055 "SIM-Phase[Axle = 2]" = 402
At MLC 3.02 as master:
ID2431 "SIMx Phase[Axle = Ring-No.] = 402 Restart the cross-communication, i.e.:
At SDC 3.02 as master:
Overwrite ID1058 "SIM-Slave-Number[Axle= 2]" with the same value.
At MLC 3.02 as master:
Describe ID2533 "ML Ring-command[Axle= Ring No.]" with the value 1.
Wrong number of slaves
Identifier
At SDC 3.02 as master:
Check the ID1055 "SIM-Phase[Axle = 2]" = 001
for MLC 3.02 as master:
Check the ID2429 "SIMx SlaveNumber[Axle= Ring No.]
The value does not equal the number of cross communication slaves. At SDC 3.02 as master:
Correct and save ID1058
with MLC 3.02 as master:
Correct and save
ID2501 "ML Member 1[Axle = Ring No.] to
ID2532 "ML Member 32[Axle = Ring No.]