Mitsubishi Electric MELSEC QS Series User Manual page 98

7
PROCEDURE BEFORE STARTING THE DATA LINK
(6) Confirm the execution
The "MST" LED on the safety master module flashes during the hardware
test.
(7) Check the result
Check the result of the hardware test with the LEDs on the safety master
module and the safety CPU module. Also refer to the link special relay
(SB006B), which stores the test results.
[Normal result]
The "MST" LED on the safety master module turns OFF, the "ERR." LED
on the safety CPU module flashes *, and the link special relay SB006B
turns OFF.
[Abnormal result]
The "MST" LED on the safety master module turns ON, the "ERR." LED
on the safety CPU module turns OFF, and the link special relay SB006B
turns ON.
If an error is detected, refer to Chapter 9 TROUBLESHOOTING and
identify the cause of the error.
7
- 9 7.5 Checking the Module Status (Hardware Test)
From the previous page
Chapter 9
End
* If the hardware test is completed normally, the safety master module enters the watchdog timer
error state. Accordingly, "INTELLIGENT FUNCTION MODULE DOWN" (error code 1403) is gen-
erated on the safety CPU module.