Mitsubishi MELSEC QS Series User Manual page 89

6
FUNCTIONS
(3) Checking with a special relay or a special register
The current safety CPU operation mode is stored in the special relay SM560 (TEST
MODE flag) and special register SD560 (safety CPU operation mode) in the CPU
module.
The safety CPU operation mode can be externally displayed using SM560 or SD560
in a program.
The safety CPU operation mode can be also checked by monitoring SM560 or SD560
with GX Developer.
SM560
SD560
Table6.3 Special relay/special register for confirming safety CPU operation mode
Device name Name
TEST MODE flag
Safety CPU
operation mode
Description
Shows whether the current safety CPU operation
mode is TEST MODE or not.
• OFF: SAFETY MODE or SAFETY MODE (wait-for-
restart)
• ON: TEST MODE
Shows the current safety CPU operation mode.
• 0: SAFETY MODE
• 1: TEST MODE
• 2 : SAFETY MODE (wait-for-restart)
6.2 Safety CPU Operation Mode
6.2.2 Checking safety CPU operation mode
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