Register Comparison Table: Ctbl(882) - Omron CJ1M-CPU21 Operation Manual

REGISTER COMPARISON TABLE: CTBL(882)

Examples
5-4 REGISTER COMPARISON TABLE: CTBL(882)
Purpose
Ladder Symbol
Variations
Applicable Program Areas
■ Example 1
When CIO 000100 is ON in the following programming example, PRV2(883)
reads the present pulse frequency at high-speed counter 0, converts that
value to a rotational speed (r/min), and outputs the hexadecimal result to
D00201 and D00200.
000100
■ Example 2
When CIO 000100 is ON in the following programming example, PRV2(883)
reads the counter PV, converts that value to number of revolutions, and out-
puts the hexadecimal result to D00301 and D00300.
000100
CTBL(882) is used to register a comparison table and perform comparisons
for a high-speed counter PV. Either target value or range comparisons are
possible. An interrupt task is executed when a specified condition is met.
This instruction is supported by the CJ1M-CPU21/CPU22/CPU23 CPU Units
only.
CTBL(882)
P
P: Port specifier
C
C: Control data
TB TB: First comparison table word
Variations Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification
Block program areas
OK
PRV2
Convert frequency to speed (r/min).
#0000
#0003
Pulses/revolution
D00200
PRV2
#0001
Convert counter PV to revolutions.
#0003
Pulses/revolution
D00300
Step program areas Subroutines
OK OK
Section 5-4
CTBL(882)
@CTBL(882)
Not supported
Interrupt tasks
OK
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