TECO SG2-12HR-12D, User Manual

Page: 106 / 270

Chapter 5 Relay Ladder Logic Programming
98
-
8B
Comparator Instructions
The SG2 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 pa
rameter, 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 Ay Ax Ay
⑤ ④ ④
,
+ ≤ ≤ −
;
(2) Analog Comparator mode 2:
ON Ay Ax
⑤ ,
≤
;
(3) Analog Comparator mode 3:
ON Ay Ax
⑤ ,
≥
;
(4) Analog Comparator mode 4:
ON Ax
⑤ ④
,
≥
;
(5) Analog Comparator mode 5:
ON Ax
⑤ ④
,
≤
;
(6) Analog Comparator mode 6:
ON Ax
⑤ ④
,
=
;
(7) Analog Comparator mode 7:
ON Ax
⑤ ④ ,
≠
;
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)
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor