Monitor Data - Mitsubishi Electric MELSEC Q Series User Manual

5.5

Monitor Data

This section describes the details of monitor data.
Item
Current feed value
Md.1
Actual current value
Md.2
Error code (ERR.1)
Md.3
Error code (ERR.2)
Md.4
Deviation counter
Md.5
value (address)
Movement amount
after near-point dog
Md.6
ON
Description
• The current commanded position is stored. (different from the actual
motor position during operation)
• The update cycle is 0.5ms.
• When OPR is completed, the value of "
• When the current value is changed with the current value change
function, the changed value is stored. (
• The actual servomotor movement amount calculated based on
feedback pulses is stored as an actual current value (the number of
feedback pulses). (Actual current value = Current feed value -
Accumulated pulses in the deviation counter)
• The update cycle is 0.5ms.
• When a minor error occurs, the corresponding error code is stored.
• The latest error code is stored at all times. (When a new error occurs,
the error code is overwritten.)
• When Error reset signal (Y28) is turned on, the error code is cleared
to 0.
For details on error codes, refer to the following.
Page 250, Section 14.3
• When a major error occurs, the corresponding error code is stored.
• The latest error code is stored at all times. (When a new error occurs,
the error code is overwritten.)
• When Error reset signal (Y28) is turned on, the error code is cleared
to 0.
For details on error codes, refer to the following.
Page 250, Section 14.3
• The difference of the current feed value and actual current value is
stored as a deviation counter value.
• The update cycle is 0.5ms.
• When OPR starts, "0" is stored.
• When OPR is completed, the movement amount from the near-point
dog ON to the OPR completion is stored. (Movement amount:
Movement amount to OPR completion using near-point dog ON as
"0".) The stored value varies depending on feedback pulses input at
the OPR as shown below.

When the phase A proceeds 90 degrees than phase B: positive
value

When the phase B proceeds 90 degrees than phase A: negative
value
• The count value is stored for both the near-point dog method and the
count method. (Use the value as a reference value for OPR
adjustment.)
CHAPTER 5 DATA USED FOR POSITIONING
Default value
0pulse
OP address" is stored.
Pr.10
Page 217, Section 11.5)
0pulse
0
0
0pulse
0pulse
Buffer
memory
address
(decimal)
100
101
5
102
103
104
105
106
107
108
109
85