Mitsubishi Electric E70 Series Instruction Manual page 630

Z67 CC-Link communication error
Details
A communication error occurred during CC-Link communication using CC-Link unit.
Remedy
- Refer to "List of Messages" in CC-Link (Master/Slave) Specification manual (BNP-C3039-214).
Z68 CC-Link unconnected
Details
A cable between CC-Link unit and a device is disconnected or broken.
Remedy
- Connect the cable.
- Check for any broken cables.
Z69 External link error 2
Details
A FROM/TO instruction was used while the MELSEC-Q interface expansion module is not installed.
Remedy
Install the MELSEC-Q interface expansion module.
Z69 External link error 3
Details
A negative value was set for an I/O No. in the FROM/TO instruction.
Remedy
Correct the I/O No.
Z69 External link error 4
Details
A negative value was set for transfer size in the FROM/TO instruction.
Remedy
Correct the transfer size.
Z69 External link error 5
Details
The number of FROM/TO instructions within one scan has exceeded 50.
Remedy
Correct the user PLC (ladder sequence) so that the number of FROM/TO instructions per scan is 50 or
less.
Z69 External link error 6
Details
The access to the buffer memory by the FROM/TO instruction has exceeded 12K words per scan.
Remedy
Correct the user PLC (ladder sequence) so that the buffer memory access by the FROM/TO instruction
won't exceed 12K words per scan. (The total size of FROM/TO is up to 12K words.)
Z69 External link error 7
Details
A FROM/TO instruction was used in high-speed processing.
Remedy
Delete the FROM/TO instruction from high-speed processing.
Z69 External link error 8
Details
The bit device number designated in the FROM/TO instruction is not a multiple of 16.
Remedy
Correct the bit device number designated in the FROM/TO instruction to be a multiple of 16.
E70 Series Instruction Manual
Appendix 6.5 System Alarms (Z)
IV - 97