Checking Plc Alarms On Cnc Controller; Operation Procedure - Mitsubishi Electric M800VW Series Manual

M800V/M80V Series PLC Development Manual
5 Peripheral Development Environment (GX Works2)
5.13 Corrective Actions to Resolve Errors

5.13.2 Checking PLC Alarms on CNC Controller

When an error is generated while sequence programs is starting up or being executed, the status is in user PLC alarm state.
The details of the alarm can be checked by one of three methods:
 Alarm screen on the setting and display unit of the CNC controller
 PLC diagnosis screen of built-in PLC edit function
 PLC diagnosis screen of GX Works2
The PLC diagnosis screen of GX Works2 provides information as clearly as the alarm screen on the setting and display unit of
the CNC controller, and also displays ladders in which errors occurred.

5.13.2.1 Operation Procedure

(1) Start the "PLC Diagnostics" screen on GX Works2 by the following operation.
[Diagnostics] -> [PLC diagnostics]
(2) The following screen is displayed. Error information is displayed in (a) and (b).
(a) CPU operating status: RUN/STOP status of PLC is displayed here.
(b) Error information: Error No. and error occurrence time are displayed here.
- If there is no error, "No error" is displayed
- Error No. is the high-order 2 digits of the CNC side alarm sub status1
- Further detail is available upon double-click. (described later)
- When the multi-project is enabled, different CPU modules are displayed depending on the project where the error is
generated.
(c) Error jump button: Displays ladders in which errors occurred. (described later)
(d) Error display, start monitor and stop monitor button:Stops error information monitoring.
Note
 Other displays and buttons than (a) to (d) above and [Close] are not supported.
IB-1501614-B 230