Mitsubishi Electric MELSEC-Q Series User Manual page 173

10 DEVICES
10 - 15
(b) Processing at anunciator OFF
1) Special register (SD62 to SD79) data operation when an anunciator is
switched OFF by the RST F
• The anunciator No. which was switched OFF is deleted, and all
subsequent anunciator Nos. are moved up to fill the vacant space.
• If the anunciator No. stored at SD64 was switched OFF, the new
anunciator No. which is stored at SD64 is stored at SD62.
• "-1" is subtracted from the SD63 value.
• If the SD63 value is "0", SM62 is switched OFF.
SET F50
SD62 0
0
SD63
0
SD64
SD65 0
SD66 0
SD67 0
SD79
0
2) Data stored in special registers (SD62 to SD79) when annunciator is
turned OFF by execution of BKRST instruction
• The annunciator number specified in the BKRST instruction is
deleted and the annunciator numbers stored after the deleted one
are shifted up.
• If the annunciator number stored in SD64 is turned OFF, the
annunciator number newly stored in SD64 is stored into SD62.
• The data of SD63 is decremented by the number of reset
annunciators.
• If the data of SD63 is 0, SM62 is turned OFF.
3) LED indication
When all annunciator numbers in SD64 to SD79 turn OFF, the "ERR."
LED is extinguished.
instruction
SET F25 SET F1023 RST F50
50 50 50
1 2 3
50 50 50
0 25 25
0 0 1023
0 0 0
0 0 0
MELSEC-Q
25
2
25
1023
0
0
0
10 - 15