Mitsubishi Electric MELSEC Q Series, User Manual

Page: 416 / 834

9 - 16
Chapter 9 Major Positioning Control
9.1.4 Confirming the current 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 ("feed current value" and "feed machine value") are stored in the
monitor data area, and used in monitoring the current value display, etc.
Feed current value

This is the value stored in "[Md.20] Feed current value".

This value has an address established with a "machine HPR" as a
reference, but the address can be changed by changing the current
value to a new value.
Feed machine value

This is the value stored in "[Md.21] Feed machine value".

This value always has an address established with a "machine HPR"
as a reference. The address cannot be changed, even if the current
value is changed to a new value.
The "feed current value" and "feed machine value" are used in monitoring the
current value display, etc.
0 1 to Md. 20 Feed current value
t
V
HP
20000
Current value changed to
20000 with current value
changing instruction
0 1 to Md. 21 Feed machine value
Address after the current
value is changed is stored
10000
10000
Address does not change even
after the current value is changed
Fig. 9.8 Feed current value and feed machine value
Restrictions
(1) Operation cycle error will occur in the current value refresh cycle when the
stored "feed current value" and "feed machine value" are used in the control.