Mitsubishi Electric AJ71C24-S6 User Manual page 110

7.
INITIAL SETTING OF TRANSMISSION CONTROL DATA TO
BUFFER MEMORY
MELSEC-A
7.3.2 Turning
OFF error LEDs
When an error LED turns ON, it stays ON (lit) even when the cause of the error
has been eliminated.
To turn OFF the lit LED, "1" must be written t o the appropriate bit of address
102H of the buffer memory, using the sequence program TO instruction.
(1) Error LED turn-OFF request area
b15 b14 to b8 b7 b6 b5 b4 b3 b2 b l bO
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2-CIN (LED N0.16)
-
2-PIS (LED No.17)
2-PRO (LED No.18)
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4-CIN (LED No.20)
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+PIS (LED No.21)
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4 P R O
(LED No.22)
4SiO (LED N0.23)
1: Turn-OFF
request
0: No processing
NO-protocol send data
f?'iE:
request
0:
No processing
(2)
Program example to turn OFF error LEDs
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A sequence program example to turn OFF LED 2-C/N (LED N0.16) and
LED 4-PRO (LED no.22) is given below.
1
(1) The LED turn-OFF request is only valid when it is written.
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(2) Relevant data in the error LED display status storage area at address
101H is cleared when the LED turn-OFF request is made. Data at
address 102H remains as written.
(3) If the error data has not been cleared after the LED turn-OFF request
is made, the error LED will go ON again.