4 - 10
4 POSITIONING SIGNALS
Explanation of the request register
No.
Function
Bit device
Request register
1
PLC ready flag
M2000
D704
2
All axes servo ON command
M2042
D706
3
JOG operation simultaneous start command
M2048
D708
4
Manual pulse generator 1 enable flag
M2051
D755
5
Manual pulse generator 2 enable flag
M2052
D756
6
Manual pulse generator 3 enable flag
M2053
D757
(Note-1): The range of axis No.1 to 8 is valid in the Q172HCPU.
(Note-2): Device area of 9 axes or more is unusable in the Q172HCPU.
(Note-3): Handling of D704 to D708 and D755 to D757 registers
Because cannot be turn on/off for every bit from the PLC CPU, the above bit
devices are assigned to D register, and each bit device becomes on with the
lowest rank bit 0 1 of each register, and each bit device becomes off with
1 0.
Use it when the above functions are requested from the PLC CPU using the
S(P).DDRD and S(P).DDWR instruction.
(Note-4): It can also be ordered the device of a remark column.
CAUTION
The data executed later becomes effective when the same device is executed in the Motion
program and PLC program.