Mitsubishi MELSEC-WS series, User Manual

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Chapter 3
35
Product description
3.8.2 Display elements and terminal description
Terminal Assignment
X1/X2 Test outputs 1 and 2
I1…I4 Safe inputs 1 to 4
A1 24 V
A2 GND
I5…I8
Safe inputs 5 to 8
Q1…Q4 Outputs 1 to 4
MS LED Meaning Notes

Supply voltage is outside range Switch on the supply voltage and check it at the
terminals A1 and A2.
Red/green
(1 Hz)
With firmware V1.xx.0: Invalid configuration –
With firmware ≥ V2.00.0: Recoverable external
error
Check the wiring of the flashing inputs and outputs.
If all output LEDs flash, check the supply voltage at
terminals A1 and A2 of this module.
Green
(1 Hz)
System is in Stop state Start the application in the Setting and Monitoring
Tool.
 Green
System is in Run state –
Red
(1 Hz)
With firmware V1.xx.0: Recoverable external error Check the wiring of the flashing inputs and outputs.
If all output LEDs flash, check the supply voltage at
terminals A1 and A2 of this module.
With firmware ≥ V2.00.0: Invalid configuration –
Red
(2 Hz)
With firmware ≥ V2.00.0: Critical error in the
system, possibly in this module. Application is
stopped. All outputs are switched off.
Switch the supply voltage off and on again.
If the error is not eliminated after multiple repetition,
replace the module.
For detailed diagnostics information refer to the
Setting and Monitoring Tool ., Diagnostics view.
 Red
With firmware V1.xx.0: Critical error in the system,
possibly in this module or another module.
Application is stopped. All outputs are switched off. Switch the supply voltage off and on again.
If the error is not eliminated after multiple repetition,
replace the module which displays Red (2 Hz). If
this is not the case, use the diagnostic functions of
the Setting and Monitoring Tool to narrow down the
respective module.
With firmware ≥ V2.00.0: Critical error in the
system, possibly in another module. Application is
stopped. All outputs are switched off.
Table 13:
Displays of the MS LED
Figure 7:
Display elements
WS0-XTIO
Table 12:
Terminal assignment
WS0-XTIO