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5 High-speed Input5.4.1 Operation Mode of High-speed Comparison Instructions
5.4.1 Operation Mode of High-speed Comparison Instructions
Instruction and usage mode of H3U-PM motion control model:
Instruction Comparison Object Comparison Result Output
HSCS High-speed Counter
Y, M, and S bit elements
I010-I080 counter interrupts
Starting electronic cams
HSCR High-speed Counter
Y, M, and S bit elements
C counter
HSZ High-speed Counter
Y, M, and S bit elements
Output frequency value
HSOS
High-speed output value
Y, M, and S bit elements
I010-I080 counter interrupts
Starting electronic cams
Electronic cam value
Y, M, and S bit elements
I010-I080 counter interrupts
Starting electronic cams
HSOR
High-speed output value Y, M, and S bit elements
Electronic cam value Y, M, and S bit elements
5.4.2 HSCS Comparison Setting
◆
Overview
By high-speed counter interrupt comparison setting, the value of the counter is compared with the
comparison value. If the values are equal, the PLC system immediately sets bit elements, enables counter
interrupts, and starts electronic cams, independent of the scan cycle.
HSCS
S1 S2 D
(High
-
speed counter)
Comparison setting
Applicable Model: H
3
U
-
PM
S1 Source data Set comparison value: 32 bits
32-bit instruction (13
steps)
HSCS: continuous
execution
S2 Source data Specied high-speed counters: C252-C254
D Result Storage unit for the comparison result
◆
Operands
Operand
Bit Soft Component Word Soft Component
System·User System·User Bit Designation Indexed Address Constant
Real
Number
S1
X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM V Z Modication K H E
S2
X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM V Z Modication K H E
D
X Y M T C S SM
High-speed counter
interrupt number
SM60, SM160, SM260
KnX KnY KnM KnS KnSM V Z Modication K H E
◆
Functions and actions:
[D] is immediately set when the present value of [S2] counter is equal to the set value of [S1].
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