127
Built-in Inputs
Section 6-1
Restrictions on Interrupt
Inputs (Direct Mode)
• Interrupt inputs 0 to 3 cannot be used when built-in inputs IN0 to IN3 are
being used as general-purpose inputs or quick-response inputs.
• Interrupt input 3 cannot be used when high-speed counter input 0 is being
used and the high-speed counter 0 reset method is set to Phase-Z signal
+ Software reset.
Interrupt input 2 cannot be used when high-speed counter input 1 is being
used and the high-speed counter 1 reset method is set to Phase-Z signal
+ Software reset.
• Interrupt inputs 0 and 1 cannot be used when the origin search function is
enabled for pulse output 0 (enabled in the PLC Setup).
Interrupt inputs 2 and 3 cannot be used when the origin search function is
enabled for pulse output 1 (enabled in the PLC Setup).
Specifications
Interrupt Task Numbers
Interrupt Inputs (Counter Mode)
Overview
This function counts input signals (up or down differentiated) and starts an
interrupt task when the counter PV reaches the SV (or 0 when decrementing.)
The four interrupt inputs control interrupt tasks 140 to 143. The interrupt task
numbers cannot be changed.
Bit Allocations
Item
Specifications
Number of inputs
4 inputs (The 4 input terminals are shared with the
quick-response inputs, high-speed counter (Phase-Z
signal), and general-purpose inputs.)
Allocated data area
CIO 2960 bits 00 to 03
Interrupt detection
Up differentiation or down differentiation
Input bit
Interrupt task number
CIO 2960 bit 00
140
CIO 2960 bit 01
141
CIO 2960 bit 02
142
CIO 2960 bit 03
143
Code
Word address
Bit
Function
IN0
CIO 2960
00
Interrupt input 0
IN1
01
Interrupt input 1
IN2
02
Interrupt input 2
IN3
03
Interrupt input 3
Summary of Contents for CJ1M-CPU21
Page 1: ...Cat No W395 E1 03 CJ series Built in I O CJ1M CPU21 22 23 CJ1M CPU Units...
Page 2: ...CJ series Built in I O CJ1M CPU21 22 23 CPU Units Operation Manual Revised August 2004...
Page 3: ...iv...
Page 19: ...xx...
Page 79: ...50 Wiring Examples Section 3 3...
Page 217: ...188 Origin Search and Origin Return Functions Section 6 3...
Page 220: ...191 Built in Outputs Section 7 1...
Page 247: ...218 Built in Outputs Section 7 1...
Page 251: ...222 Combinations of Pulse Control Instructions Appendix A...
Page 255: ...226 Using Pulse Instructions in other CPU Units Appendix B...
Page 263: ...234 Index...
Page 265: ...236 Revision History...