Checking Safety Cpu Operation Mode - Mitsubishi MELSEC QS Series User Manual

6
FUNCTIONS

6.2.2 Checking safety CPU operation mode

The safety CPU operation mode of the CPU module can be checked with the following
methods.
• Checking with the LEDs on the front of the CPU module
• Checking with the GX Developer online operation screen
• Checking with a special relay or a special register
(1) Checking with the LEDs on the front of the CPU module
The current safety CPU operation mode can be checked with the "ALIVE" LED and
"TEST" LED on the front of the CPU module.
Table6.2 Checking safety CPU operation mode with the "ALIVE" LED and "TEST" LED
TEST MODE
ON ON
ALIVE TEST
RUN USER
ERR. BAT.
SAFETY MODE (wait-for-restart)
ON Flashing
ALIVE TEST
RUN USER
ERR. BAT.
6.2 Safety CPU Operation Mode
6.2.2 Checking safety CPU operation mode
SAFETY MODE
ON OFF
ALIVE TEST
RUN USER
ERR. BAT.
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