IMO iSmart V4 - Comparator Instructions

Chapter 5 Relay Ladder Logic Programming 103
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8BComparator Instructions
The iSmart smart relay includes 31 comparator coils that can be used throughout a program. Each comparator has 8
different operation modes. Additionally, each comparator has 5 parameters for proper configuration. The table below
describes each configured parameter and lists each compatible element for configuring Comparators.
※ The preset value ②, ③ and ④ can be a constant or refer to other function current value.
Comparator Mode 0 (Internal Coil)
Mode 0 Comparator (Internal Coil) used as internal auxiliary coils. No preset value. In the example below shows
the relationship among the numbered block diagram for a Mode 0 Comparator, the ladder diagram view, and the
software Edit Contact/Coil dialog box.
Analog comparator Mode 1~7
(1) Analog Comparator mode 1:
ON
AyAxAy ⑤④④
,+≤≤−
;
(2) Analog Comparator mode 2:
ONAyAx ⑤,≤
;
(3) Analog Comparator mode 3:
ON
AyAx ⑤,≥
;
(4) Analog Comparator mode 4:
ONAx ⑤④ ,≥
;
(5) Analog Comparator mode 5:
ONAx ⑤④ ,≤
;
(6) Analog Comparator mode 6:
ONAx ⑤④ ,=
;
(7) Analog Comparator mode 7:
ONAx ⑤④ ,≠
;
Example 1: Analog Signal Compare
Symbol
Description
①
Comparison Mode (0~7)
②
Ax analog input value (0.00~99.99)
③
Ay analog input value (0.00~99.99)
④
Reference comparative value, could be constant, or other data code
⑤
Output terminal (G01~G1F)