Mitsubishi Electric MELSEC Q Series Programming Manual page 129

4 DEDICATED DEVICES
(4) Speed monitoring error status
Signal name
Speed monitoring error status
(Note-1): is Multiple CPU shared device start address of safety signal comparison parameter.
[Function]
The error status detected by speed monitoring function is stored.
[Operation]
The error factor detected by speed monitoring is stored in the corresponding
device of each speed monitoring parameter block. Each bit corresponds to
the signals below. If the error factor is ON, the bit of the corresponding signal
will be turned ON.
Bit 0 to 6 reflect the monitoring result of the corresponding signal in real time.
If one of the bits 0 to 6 continues to be ON over speed monitoring error
detection time, bit 7 will be turned ON and safety observation error will occur.
Within the detection time, the all bits corresponding to the detected error
factor is turned ON.
PLC CPU
Motion CPU : U3E1\G +60 (Parameter block No.1) to
E D B A 7 6 5 4
F C 9 8
• Bit 0: Command speed over
If the command speed exceeds the safety speed (factor of "Safety
observation error (error code: 110)"), this bit will be turned ON.
• Bit 1: Feedback speed over
If the feedback speed exceeds the safety speed (factor of "Safety
observation error (error code: 111)"), this bit will be turned ON.
• Bit 2: Allowance value of position deviation over
If the position deviation exceeds the allowance value of position
deviation (factor of "Safety observation error (error code: 112)"), this
bit will be turned ON.
PLC CPU side
U3E0\G +60 to U3E0\G +91
: U3E0\G +60 (Parameter block No.1) to
U3E0\G +91 (Parameter block No.32)
U3E1\G +91 (Parameter block No.32)
3 2
1 0
bit
Command speed over
Feedback speed over
Allowance value of position deviation over
Allowance value of speed deviaction over
External auxiliary pulse positon deviation over
Standstill monitoring position command over
Speed monitoring error detection
Axis stop time over
Speed monitoring unaccepted request
Speed error detection check time out
Small oscillation warning detection
Small oscillation error detecton
Servo axis data error detection
Speed monitoring parameter inconsistency detection
4 - 16
(Note-1)
Device No.
Motion CPU side
U3E1\G +60 to U3E1\G +91
(Note-1)
(Note-1)
(Note-1)
(Note-1)
(Note-1)
(Note-1)
(Note-1): Only Moton CPU side
Factor of speed
monitoring error