Справочник Пользователя для Mitsubishi Electronics QnUCPU

6

 

-

 

116

6.21  LED Indication

Operating status of the CPU module can be checked by the LEDs on the front of the CPU module. 
For details of LED indications, refer to the following. 

 QCPU Userís Manual (Hardware Design, Maintenance and Inspection)

6.21.1  Methods for turning off the LEDs

The LEDs can be turned off by the following operations (except for reset operation).

 : Valid,   : Invalid

*1: Description of special relays and special registers

Configure setting to turn off each LED as follows:

 • Turning off both the Boot LED and USER LED: SD202 = 110

H

 • Turning off only the BOOT LED: SD202 = 100

H

 • Turning off only the USER LED: SD202 = 10

H

Execute the LEDR instruction after resolving the error.

After resolving the error, clear the error by the special relay SM50 and special 

register SD50

*1

 (operation continuation error only).

Turn off the LED by the special relay SM202 and special register SD202.

*1

• SM50

: Clears an error of the error code stored in SD50 when the CPU module is powered off and then on.

• SD50

:

Stores an code of an error to be ccleared.
For details of error codes, refer to the following.

 QCPU Userís Manual (Hardware Design, Maintenance and Inspection)

• SM202

: Turns off the LED corresponding to each bit of SD202 when the CPU module is powered off and then on.

• SD202

: Set an LED to be turned off.

b15

b8

b4

b0

SD20

1/0

1/0

BOOT LED

USER

LED

0: Not turn on.
1: Turns on.