Omron CP1L - 12-2007, Operation Manual

Page: 367 / 673

334
Interrupt Functions
Section 6-1
REGISTER
COMPARISON TABLE
Instruction:
CTBL(882)
CTBL(882) compares the PV of a high-speed counter (0 to 3) to target values
or target value ranges and executes the corresponding interrupt task (0 to
255) when the specified condition is met.
Contents of the
Comparison Table Target-value Comparison Table
Depending on the number of target values in the table, the target-value com-
parison table requires a continuous block of 4 to 145 words.
Range Comparison Table
The range comparison table requires a continuous block of 40 words because
comparison conditions 1 to 8 require 5 words each (2 words for the upper
range value, 2 words for the lower range value, and one word for the interrupt
task number).
Operand Settings
P High-speed
counter number #0000 High-speed counter 0
#0001 High-speed counter 1
C Control data #0000 Registers a target-value comparison table and
starts the comparison operation.
#0001 Registers a range comparison table and starts
the comparison operation.
#0002 Registers a target-value comparison table.
#0003 Registers a range comparison table.
TB First comparison
table word Specifies the leading word address of the comparison
table, which is described below.
@CTBL(882)
P
C
TB
Execution condition
P: High-speed counter number
TB: First comparison table word
C: Control data
Number of target values
Target value 1 (rightmost digits)
Target value 1 (leftmost digits)
Task number for target value 1
0001 to 0030 hex (1 to 48 target values)
0000 0000 to FFFF FFFF hex
Target value 48 (rightmost digits)
Target value 48 (leftmost digits)
Task number for target value 48
0000 0000 to FFFF FFFF hex
Interrupt task number
Direction
0: Incrementing
1: Decrementing
Interrupt task number
00 to FF hex (0 to 255)