357
Interrupt Functions Section 6-1
High-speed Counter
Memory Areas
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
next page.
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.
Content High-speed counter
01
PV Leftmost 4 digits A271 A273
Rightmost 4 digits A270 A272
Range Comparison Condi-
tion Met Flags
ON for match in range 1 A274.00 A275.00
ON for match in range 2 A274.01 A275.01
ON for match in range 3 A274.02 A275.02
ON for match in range 4 A274.03 A275.03
ON for match in range 5 A274.04 A275.04
ON for match in range 6 A274.05 A275.05
ON for match in range 7 A274.06 A275.06
ON for match in range 8 A274.07 A275.07
Comparison In-progress
Flags
ON while the comparison is in
progress.
A274.08 A275.08
Overflow/Underflow Flags ON if a PV overflow or under-
flow occurred while operating
in linear mode.
A274.09 A275.09
Count Direction Flags 0: Decrementing
1: Incrementing
A274.10 A275.10
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
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