Mitsubishi QJ71MB91 User Manual

11
TROUBLESHOOTING
11.5 Turning Off the ERR. LED
11.5.2 Turning off the ERR. LED by sequence program
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9
PROGRAMMING
10
DEDICATED INSTRUCTIONS
11
TROUBLESHOOTINGAPPENDICESINDEX
(c) Turning on the CH common/CHn error clear request
Turning on the CH common/CHn error clear request (Y1B/Y1C) turns off the ERR.
LED. ((2) in the figure)
Clear request will be processed all the time while the CH common/CHn error clear
request (Y1B/Y1C) is on. ((3) in the figure)
(2) Program conditions
The following program executes turning off the ERR. LED when communications are
performed on the CH2 side.
(a) Devices used
(b) Buffer memory used
(3) Program example
(When the I/O signals of the QJ71MB91 are X/Y0 to X/Y1F)
Figure 11.14 I/O signal behavior when turning off the ERR.LED is requested
Table11.18 Devices used for turning off the ERR. LED
Device name Device Application
QJ71MB91 input/output Input
X0 Module READY
Y1C CH2 error clear request
External input (command) X20 ERR.LED OFF command
Table11.19 Buffer memory used for turning off the ERR. LED
Device name Address Application
QJ71MB91 buffer memory
0009
H
(9)
CH2 side Detailed LED clear request
storage area
Figure 11.15 ERR. LED OFF program example
Error
occurred
Error
occurred
Error
occurred
Error occurred
3)
CH common/CHn error clear request
(Y1B/Y1C)
CH common/CHn error
(X1B/X1C)
(LED On)
ON1)
(LED On)
ON1)
(LED Off)
2)
ERR.LED
Off
command
Module
READY
All error LEDs are specified
to the CH2 side Detailed LED
clear request storage area.
CH2 error clear request
After the CH2 side Detailed
LED clear request storage area
is initialized, the CH2 error
clear request is reset.
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Mitsubishi QJ71MB91 Specifications

General

Brand	Mitsubishi
Model	QJ71MB91
Category	Controller
Language	English