Mitsubishi Q Series User Manual page 76

3 SPECIFICATIONS
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(9) Setting change completion flag (XnB)
(a) This signal turns on the setting change completion of reflection of buffer
memory settings on control which starts when the setting conversion
command (YnB) turns on.
(b) When the setting change command (YnB) turns off, the setting change
completion flag (XnB) also turns off.
ON
OFF
YnB
OFF
XnB
(10) Alert occurrence flag (XnC, XnD)
(a) This signal turns on at alarm occurrence on the corresponding channel.
Alert occurrence
Channel
1
2
(b) When an alert occurs, the alert occurrence data is stored into alert definition
(buffer memory address: 5, 6) and the alert occurrence flag (XnC, XnD)
turns on.
OFF
Alert occurrence flag
(XnC)
Buffer memory
0
address : 5
ON
ON/OFF status
flag
OFF: Without alarm
XnC
occurrence
ON : With alarm
XnD
occurrence
ON
Detected alarm data
MELSEC-Q
Alert occurrence data buffer
memory address
5
H
6
H
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