9 - 17
Chapter 9 Major Positioning Control
Monitoring the current value
The "current feed value" and "machine feed value" are stored in the following
buffer memory addresses, and can be read using a "DFRO(P) instruction" or
"DMOV(P) instruction" from the PLC CPU.
Buffer memory addresses
LD77MS2/LD77MS4
LD77MS16
Md.20
Current feed value
800+100n
801+100n
2400+100n
2401+100n
Md.21
Machine feed value
802+100n
803+100n
2402+100n
2403+100n
(1) The following shows the examples of programs to read out the current feed
value of the LD77MS4 [axis 1] to D104 and D105 when X40 is turned ON.
(a) For the DFRO(P) instruction
X40
K800
D104
K1
H0
DFRO
(b) For the DMOV(P) instruction
X40
DMOV
U0\
G800
D104
Содержание MELSEC-L Series
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