Omron CJ1M-CPU series Programming Manual

169
Interrupt Tasks Section 4-3
External Interrupts (CS
Series Only)
An external interrupt task will be executed when an interrupt is requested by
an Special I/O Unit, CPU Bus Unit, or Inner Board (CS Series only). The Spe-
cial I/O Unit or CJ Bus Unit, however, must be on the CPU Rack to request
execution of an external interrupt task.
List of Interrupt Tasks
Note 1. The Interrupt Input Unit must be mounted to the CPU Rack. For CJ1-H
CPU Units, the Unit must be connected as one of the five Units next to the
CPU Unit (slots 0 to 4). For CJ1M CPU Units, the Unit must be connected
as one of the three Units next to the CPU Unit (slots 0 to 2). I/O Interrupt
Units mounted elsewhere cannot be used to request execution of I/O inter-
rupt tasks
2. The Special I/O Unit or CPU Bus Unit must be mounted to the CPU Rack.
For CJ1-H CPU Units, the Unit must be connected as one of the five Units
next to the CPU Unit (slots 0 to 4). For CJ1M CPU Units, the Unit must be
connected as one of the three Units next to the CPU Unit (slots 0 to 2).
Units mounted elsewhere cannot be used to generate external interrupts.
Power OFF
CPU Unit
Interrupt
Pro-
gram
Special I/O Unit,
CS1 CPU Bus Unit
or Inner Board
CPU Unit
Pro-
gram
Interrupt
Type Task
No.
Execution condition Setting procedure Number of
interrupts
Application examples
I/O Inter-
rupts
00 to 31
100 to
131
Input from the Interrupt
Input Unit ON on the
CPU Rack (See note 1.)
Use the MSKS (SET INTER-
RUPT MASK) instruction to
assign inputs from Interrupt
Input Units on the CPU Rack.
32 points Increasing response
speed to specific inputs
Scheduled
Interrupts
0 and 1
2 and 3 Scheduled (fixed inter-
vals)
Use the MSKS (SET INTER-
RUPT MASK) instruction to
set the interrupt interval. See
Scheduled Interrupt Time
Units in PLC Setup.
2 points Monitoring operating sta-
tus at fixed intervals
Power OFF
Interrupt
1 When power turns OFF
(After the default power
OFF detection time +
power OFF detection
delay time)
See Power OFF Interrupt
Task and Power OFF Detec-
tion Delay Time in PLC
Setup.
1 point Executing emergency
processing when power
shuts OFF.
External
Interrupts
0 to 255
0 to
255
When requested by an
Special I/O Unit or CPU
Bus Unit on the CPU
Rack or by an Inner
Board (CS Series only)
(See note 2.)
None (always valid) 256 points Performing processing
required by Special I/O
Units, CPU Bus Units,
and the Inner Board.

Omron CJ1M-CPU series Specifications

General

Brand	Omron
Model	CJ1M-CPU series
Category	Controller
Language	English