203
Interrupt Functions Section 5-1
High-speed Counter
Memory Areas
(All CP1H CPU Units)
Note The comparison table and comparison conditions 1 to 8 are different for tar-
get-value comparison and range comparison operations. For details, refer to
5-2 High-speed Counters.
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.
Content High-speed counter
0123
PV Leftmost 4 digits A271 A273 A317 A319
Rightmost 4 digits A270 A272 A316 A318
Range Compari-
son Condition Met
Flags
ON for match in range 1 A274.00 A275.00 A320.00 A321.00
ON for match in range 2 A274.01 A275.01 A320.01 A321.01
ON for match in range 3 A274.02 A275.02 A320.02 A321.02
ON for match in range 4 A274.03 A275.03 A320.03 A321.03
ON for match in range 5 A274.04 A275.04 A320.04 A321.04
ON for match in range 6 A274.05 A275.05 A320.05 A321.05
ON for match in range 7 A274.06 A275.06 A320.06 A321.06
ON for match in range 8 A274.07 A275.07 A320.07 A321.07
Comparison In-
progress Flags
ON while the compari-
son is in progress.
A274.08 A275.08 A320.08 A321.08
Overflow/Under-
flow Flags
ON if a PV overflow or
underflow occurred
while operating in linear
mode.
A274.09 A275.09 A320.09 A321.09
Count Direction
Flags
0: Decrementing
1: Incrementing
A274.10 A275.10 A320.10 A321.10
Operand Settings
P High-speed
counter number
#0000 High-speed counter 0
#0001 High-speed counter 1
#0002 High-speed counter 2
#0003 High-speed counter 3
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
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