Mitsubishi Electric C70 Setup Manual page 492

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): 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 0101
Details
Emergency stop hot line can not be canceled.
The latch signal of the hot line cannot be canceled when releasing the emergency stop.
(Only when the emergency stop input is released for a short time before the gate off.)
Remedy
An unevenness of the gate off time causes this error in the configuration with more than two power
supply units. Set the gate off time evenly.
Contact the service center when this warning stays on.
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.)
Z59 Acc/dec time cnst too large
Details
Acceleration and deceleration time constants are too large.
(This alarm is output at the same time as "T02 0206".)
Remedy
- Set the larger value for "#1206 G1bF(Maximum speed)".
- Set the smaller value for "#1207 G1btL(Time constant)".
- Set the lower feedrate.
(a) (b) (c) (d)(e) (f) (g) (h)
C70 Setup Manual
Appendix 2.6 System Alarms (Z)
475