Mitsubishi Electric MELSEC QS Series User Manual page 57

4
FUNCTIONS
[How to confirm the interlock status]
[How to clear the interlock]
POINT
Safety station interlock
status
OFF
(SD1072)
Safety station interlock
clear request
OFF
(SD1076)
Error in communication
with safety remote station
The interlock status can be confirmed by the fact that the bit corresponding to the
station number is ON in the special register SD1072 to SD1075 (Safety station
interlock status).
If the safety remote station is connected to the second safety master module, check
the special register SD1272 to SD1275.
(If the bit corresponding to the station No. is OFF, it does not indicate the interlock
status.
In special register SD1076 to SD1079 (Safety station interlock clear request), turn
the bit corresponding to the station No. from OFF to ON.
If the safety remote station is connected to the second safety master module, make
a clear request at the special register SD1276 to SD1279.
For the special registers (SD), refer to the QSCPU User's Manual (Function
Explanation, Program Fundamentals).
ON
OFF
ON
END processing END processing
Clears interlock status,
starting initial communication.
4.2 Detailed Explanation of Functions
4.2.14 Safety remote station interlock function
ON
OFF
Recognizes it Recognizes it
turned OFF. turned OFF.
END processing END processing
Error in communication Clears interlock status,
with safety remote station starting initial communication.
OFF
ON
END processing END processing
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