Mitsubishi C70 User Manual

IV - 101
Appendix 7. Explanation of Alarms
Appendix 7.5 System Alarms (Z)
Z55 RIO communication stop
Details
An error occurs in the communication between the control unit and remote I/O unit.
Disconnection of a cable
Fault in remote I/O unit
Fault of power supply to remote I/O unit
The alarm and the I/O unit No. is displayed when an error occurs in the communication
between the control unit and remote I/O unit.
The remote I/O unit No. is displayed in eight digits. Two digits (in hexadecimal) are used for
each board and part system.
[Display format of remote I/O unit No. ]
Z55 RIO communication stop __ __ __ __ __ __ __ __
(a) (b) (c) (d)(e) (f) (g) (h)
(a)(b): Remote I/O 2nd part system communication interrupted station
(c)(d): Remote I/O 1st part system communication interrupted station
(e)(f): Remote I/O 3rd part system communication interrupted station
(g)(h): Board connection remote I/O communication interrupted station
(a)(b) indicates the following station in hexadecimal.
bit0: RIO (0th station)
bit1: RIO (first station)
bit2: RIO (second station)
bit3: RIO (third station)
bit4: RIO (fourth station)
bit5: RIO (fifth station)
bit6: RIO (sixth station)
bit7: RIO (seventh station)
This also applies for the remote I/O 1st part system communication interrupted station,
remote I/O 3rd part system communication interrupted station and board connection remote
I/O communication interrupted station.
Remedy
- Check and replace the cables.
- Replace the remote I/O unit.
- Check the power supply (existence of supply and voltage).
- When not using the safety observation, set "1" in "#21102 add02/bit2 (RIO communication
interruption alarm disabled)".
Z57 System warning 0100
Details
The specified capacity cannot be allocated for the buffer memory used for program server
operation.
Remedy
A remedy like changing options setting is required. Contact the service center.
(Even this alarm occurs, other functions than program server operation can be used.)
Z58 ROM write not completed
Details
A machine tool builder macro program has not been written to FROM after being registered/
edited/ copied/ condensed/ merged/ the number changed/ deleted.
Remedy
- Write the machine tool builder macro program to FROM.
The program does not need to be written to FROM unless the editing operations and so on
need to be valid after the NC power OFF.

Mitsubishi C70 Specifications

General

Brand	Mitsubishi
Model	C70
Category	Control Unit
Language	English