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MELSEC-Q
3 SPECIFICATIONS
Device No.
Signal name
Description
XB
Channel change
completed flag
(1) This is used as an interlock condition for setting the channel change request (YB) to
ON/OFF when changing the channel for which the offset/gain settings are to be
performed.
(2) See Section 4.6 regarding the offset/gain settings.
Performed by the D/A conversion module
Performed by the sequence program
Channel change request (YB)
Offset/gain setting mode
Offset/gain specifications
(buffer memory addresses 22 and 23:
Un\G22 and Un\G23)
Channel change completed
flag (XB)
XC
Set value change
completed flag
(1) This is used as an interlock condition for setting the set value change request (YC)
to ON/OFF when adjusting the offset/gain settings.
(2) See Section 4.6 regarding the offset and gain settings.
Performed by the D/A conversion module
Performed by the sequence program
Set value change request (YC)
Set value change completed
flag (XC)
XD
Synchronous
output mode flag
This flag turns ON when the system is set to the synchronous output mode.
XF
Error flag
(1) The error flag turns ON when a write error occurs.
(2) To turn the error flag (XF) OFF, remove the cause of the error and set the error
clear request (YF) to ON.
The error code (buffer memory address 19: Un\G19) changes to 0 and the ERROR
LED turns off.
Performed by the D/A conversion module
Performed by the sequence program
Error flag (XF)
Error clear request (YF)
Error code is read during this interval.