Method To Turn Off The Led - Mitsubishi Q00JCPU User Manual

6
FUNCTIONS

6.21.1 Method to turn off the LED

(1) Method to turn off the LED
(2) Method to not turn on the ERR. LED, USER LED, and BAT. LED
6
- 162 6.21 LED Display
6.21.1 Method to turn off the LED
(a) For Basic model QCPU
To turn off the ERR. LED that is on, remove the cause of the error and then
operate the special relay SM50 and special register SD50 to cancel the error.
(This does not apply to reset operation.)
(b) For High Performance model QCPU, Process CPU, Redundant CPU,
Universall model QCPU
The LED that is on can be turned off by the following operation. (Except for the
reset operation.)
Method to Turn LED Off
Executing the LEDR instruction after resolving the
cause of error.
After the cause of error is resolved, cancel the error by
operating the special relay SM50 and special register
SD50. (Only for the operation continue errors.)
Turn off the LED by operating the special relay SM202
and special register SD202. *
* 1 :Special relay and special register contents
SM50•••When switch from OFF to ON, the error is canceled for the error code stored
in the SD50.
SD50•••The error code for the error to be canceled is stored.
Refer to the following manual for the error codes.
QCPU User's Manual (Hardware Design/Maintenance and Inspection)
SM202•••When turned from OFF to ON, the LED corresponding to each bit in the
SD202 is turned off.
SD202•••This specifies the LED to turn off.
b15
SD202
The setting to turn off each LED is as follows. (All in hexadecimal.)
• When turning off both Boot LED and USER LED
• When turning off only the BOOT LED
• When turning off only the USER LED
It is possible to set the error message display priority for each of The ERR. LED,
USER LED and BAT. LED. (
When an error No. for an LED is deleted from this priority, the LED will not turn on
even if an error with that error No. occurs.
Table6.41 LED turning off method
*1
1
b8
1/0
BOOT LED
Figure 6.97 Bit configuration of special register SD202
Section 6.21.2)
Applicable LED
ERR. USER BAT.
: Valid,
b4
1/0
USER LED
0: Not turned off
1: Turned off
: SD202=110
H
: SD202=100
H
: SD202=10
H
BOOT
: Invalid
b0