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Error Handling
Section 8-2
4.
The timeout time has elapsed for the master.
If no error did occur the HLM_STATUS will have value 0. In case of a non-
zero value, any appropriate action such as a re-try or emergency stop needs
to be programmed in the user BASIC program.
8-2-2
Servo Driver Alarms
The Servo Driver Front Panel Display Area will display if an alarm is gener-
ated in the Servo Driver. The display will display an A.
❏❏
number on screen.
Alarm Table
The Servo Driver alarms related to the option boards such as the MCW151
are given in the following table. Refer to the OMNUC W-series user’s manual
(I531) for specific details on other alarms and how to resolve them.
Alarm Description
■
A.E0
A.E0: No MC Unit
Display and Outputs
Note OFF: Output transistor is OFF (alarm state). ON: Output transistor is ON.
Status and Remedy for Alarm
■
A.E1
A.E1: MC Unit Timeout
HLM_STATUS status bits
9
8
7
0
End code (case 1 or case 3)
Timeout error (case 4)
Command not recognized (case 2)
Display
Error
Description
A.
❏❏
See Servo Driver manual.
-
A.E0
MC Unit Initiation Error
No MC unit has been mounted.
A.E1
MC Unit Timeout Error
No response from the MC Unit.
A.E2
WDC Error of MC Unit
There is an error in the MC Unit
watchdog counter.
A.E7
MC Unit Detection Error
No MC Unit has been mounted.
Alarm Outputs
Alarm Code Outputs
ALM Output
ALO1
ALO2
ALO3
OFF
ON
ON
OFF
Cause
Remedy
A
The MC Unit is defective.
Replace the MC Unit
A
At power on