Mitsubishi FX3G Series User Manual page 129

FX /FX /FX PLC User's Manual - Positioning Control Edition
3G 3U 3UC
Built-in Positioning Functions
2) For , specify the zero-phase signal input number in the range of X000 to X007. To specify the logic
S
2
of this zero-phase signal, turn the "Zero point signal logic reverse" relay on or off as shown in the
following table.
If the same input is specified for both the near-point signal and the zero-phase signal, the logic of the zero-
phase signal will be specified by the device of the near-point signal (DOG), and not by one of the following
devices. In this case, the operation will be performed at the front and rear ends of the near-point signal
(DOG) without using the zero-phase signal. This is similar to the operation of the ZRN instruction.
Pulse output
destination device
= Y000
D
1
= Y001
D
1
= Y002
D
1
= Y003
D
1
3) For , specify a pulse output number in the range of Y000 to Y003.
D
1
4) For , specify the rotation direction signal output device number.
D
2
When a high-speed output special adapter is used as a destination for pulse output on a FX
the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX
use transistor output for signals rotation direction.
High-speed output special
adapter connection position
1st adapter
2nd adapter
The rotation direction ON/OFF status of the specified device is shown in the following table.
During instruction execution, however, do not use the output
ON/OFF status of device
specified by
ON
OFF
5) Zero return direction
To specify the zero return direction, turn "zero return direction specification" relay on or off as shown in
the following table.
Pulse output
destination device
= Y000
D
1
= Y001
D
1
= Y002
D
1
= Y003
D
1
"Zero point signal logic
reverse" flag
M8346
M8356
M8366
M8376
Pulse output
= Y000
D
1
= Y001
D
1
= Y002
D
1
= Y003
D
1
Rotation direction (increase/decrease current value)
D
2
Forward rotation (Outputting pulses from
current value.)
Reverse rotation (Outputting pulses from
current value.)
"Zero return direction
specification" relay
M8342
M8352
M8362
M8372
6 Mechanical Zero Return (DSZR/ZRN Instruction)
6.2 DOG Search Zero Return (DSZR Instruction)
Description
OFF: Positive logic (Turning on the input will turn on the
near-point signal.)
ON: Negative logic (Turning off the input will turn on the
near-point signal.)
Rotation direction
output
Y004
D =
2
Y005
D =
2
Y006
D =
2
Y007
D =
2
for other purposes.
D
2
will increase the
D
1
will decrease the
D
1
Description
To perform zero return in the
forward rotation direction:
To perform zero return in the
reverse rotation direction:
PLC, use
3U
/FX /FX PLC,
3U 3UC 3G
Turn on the relay.
Turn off the relay.
B - 91
A
B
Apx.