Confirming The Current Value - Mitsubishi Electric MELSEC-LD77MS2 User Manual

9.1.4 Confirming the current value

Md. 20 Current feed value
Md. 21 Machine feed value
Values showing the current value
The following two types of addresses are used as values to show the position in
the Simple Motion module.
These addresses ("current feed value" and "machine feed value") are stored in the
monitor data area, and used in monitoring the current value display, etc.


Current feed value


Machine feed value
The "current feed value" and "machine feed value" are used in monitoring the
current value display, etc.
V
OP
0
0
Fig. 9.8 Current feed value and machine feed value
Restrictions
(1) Operation cycle error will occur in the current value refresh cycle when the
stored "current feed value" and "machine feed value" are used in the control.
This is the value stored in "
This value has an address established with a "machine OPR" as a
reference, but the address can be changed by changing the current
value to a new value.
This is the value stored in "
This value always has an address established with a "machine OPR"
as a reference. The address cannot be changed, even if the current
value is changed to a new value.
1 to 10000
1 to 10000
9 - 16
Chapter 9 Major Positioning Control
".
Current feed value
Md.20
".
Machine feed value
Md.21
Current value changed to
20000 with current value
changing instruction
Address after the current
value is changed is stored
20000
Address does not change even
after the current value is changed
t