28 SPECIFICATIONS
28.2 Input Specifications
351
28
Input assignment
Input numbers of the CPU module and high-speed pulse input/output module are assigned as follows.
For parameter settings in GX Works3, refer to Page 376 POSITIONING PARAMETER.
CPU module
*1 In the case of FX3 compatible operand, DSZR/DDSZR instruction can use bit device other than X. In this case, the near-point signal
(DOG) and zero signal must be assigned to the same device. For details, refer to Page 429 Mechanical OPR.
*2 Only FX5S/FX5U/FX5UC CPU module can use the devices of axis 4.
Application Input
number
Remarks
Stop command All input
points
Connect a line to any input.
If the line-connected input is turned on, the following operations stop the pulse output.
• Turn off the positioning instruction signal.
• Turn on the pulse output stop command.
• Turn on the pulse decelerate and stop command.
OPR Start
command
All input
points
Connect a line to any input.
When the line-connected input is turned on, drive the DSZR/DDSZR instruction. (Page 429 Mechanical
OPR)
Near-point
signal
(DOG)
X0 to X17
*1
Connect a line to the input specified in the parameter setting of GX Works3.
The signal does not occupy the input interrupt function, and its edge is detected with a 1-ms interrupt.
For the near-point signal, refer to Page 406 Near-point Dog Signal.
Zero signal X0 to X17
*1
Connect a line to the input specified in the parameter setting of GX Works3.
The input interrupt function is assigned forcibly to a specified input.
For the zero signal, refer to Page 407 Zero Signal.
ABS read All input
points
Connect a line if it is necessary to use the absolute position detection system.
Connect a line to the input specified by the DABS instruction. (Page 506 Absolute Position Detection
System)
3 consecutive input points are used for this function.
External start signal X0 to X17 Connect a line to the input specified in the parameter setting of GX Works3.
The input interrupt function is assigned forcibly to a specified input.
Interrupt input signal 1 X0 to X17 Connect a line to the input specified in the parameter setting of GX Works3.
The input interrupt function is assigned forcibly to a specified input.
Interrupt input signal 2 X0 to X17 Connect a line to the input specified in the table parameter setting of GX Works3.
The signal does not occupy the input interrupt function, and its edge is detected with a 1-ms interrupt.
Forward rotation limit (LSF) All input
points
Connect a line to any input.
When the line-connected input is turned on, the forward limit relay must be turned on.
The forward limit depends on the axis number as shown in the following table.
Reverse rotation limit (LSR) All input
points
Connect a line to any input.
When the line-connected input is turned on, reverse limit relay must be turned on.
The reverse limit depends on the axis number as shown in the following table.
Axis 1
SM5660
Axis 2
SM5661
Axis 3
SM5662
Axis 4
*2
SM5663
Axis 1
SM5676
Axis 2
SM5677
Axis 3
SM5678
Axis 4
*2
SM5679
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