Chapter 4 Relay Ladder Logic Programming 70
Comparator Instructions
The SG2 smart relay includes a total of 15 separate comparator instructions that can be used throughout a
program. Each comparator has a choice of 6 operation modes. Additionally, each comparator has 7 parameters
for proper configuration. The table below describes each configuration parameter, and lists each compatible
memory type for configuring counters.
Symbol Description
c
Comparison Mode(0~5)
d
X analog input (A1~A8/ V1~V8), the present value of the timer, counter.
e
Y analog input (A1~A8/ V1~V8), the present value of the timer, counter.
f
X analog input value(0.00~99.99)
g
Y analog input value (0.00~99.99)
h
Set reference comparative value: could be constant, or the present value
of the timer, counter and analog input, analog input (A1~A8/ V1~V8).
i
Output terminal(G1~GF)
Analog comparator Mode 0 (Internal Coil)
Mode 0 Analog Comparator used as internal
auxiliary coils. No preset value.
In the example below shows the relationship
between the numbered block diagram for a Mode 0
Analog Comparator the ladder diagram view, and
the software Edit Contact/Coil dialog box.