Description Of Tasks - Omron CS1G/H-CPUxx-EV1 Programming Manual

Description of Tasks

1-6 Description of Tasks
1,2,3...
14
• A card that is activated will remain activated and will be read in subse-
quent sequences. A card that is deactivated will remain deactivated and
will be skipped until it is reactivated by another card.
Earlier program:
Like a scroll
Tasks are broadly grouped into the following types:
1. Cyclic tasks (32 max.)
Tasks that will be executed once per cycle if executable. Execution can
also be disabled for cyclic tasks if required.
2. Interrupt tasks
Tasks that are executed when the interrupt occurs whether or not a cyclic
task is being executed. Interrupt tasks (see notes 1 and 2) are grouped into
the following four types (five types including the extra cyclic tasks for CS1-
H, CJ1-H, CJ1M, or CS1D CPU Units):
a) Power OFF interrupt task (Not supported by CS1D CPU Units for Du-
plex-CPU Systems):
Executed when power is interrupted. (1 max.)
b) Scheduled interrupt task (Not supported by CS1D CPU Units for Du-
plex-CPU Systems):
Executed at specified intervals. (2 max.).
c) I/O interrupt task (Not supported by CJ1 or CS1D CPU Units for Du-
plex-CPU Systems):
Executed when an Interrupt Input Unit input turns ON (32 max.).
d) External interrupt task (Not supported by CJ1 or CS1D CPU Units for
Duplex-CPU Systems):
Executed (256 max.) when requested by an Special I/O Unit, CPU
Bus Unit, or Inner Board (CS Series only).
e) Extra cyclic tasks (Supported only by CS1-H, CJ1-H, CJ1M, and
CS1D CPU Units):
Interrupt tasks that are treated as cyclic tasks. Extra cyclic tasks
are executed once every cycle as long as they are in an executable
condition.
A total of 288 tasks with 288 programs can be created and controlled with the
CX-Programmer. These include up to 32 cyclic tasks and 256 interrupt tasks.
Section 1-6
CS/CJ-series program:
Like a series of cards that can be activated
or deactivated by other cards.
Activated Deactivated