Chapter 5 Relay Ladder Logic Programming 80
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6BCounter Instructions
The SG2 includes 31 counters that can be used throughout a program. Each
counter has a choice of 9 operation modes, 1 for pulse counter, 6 for general
purpose counting and 2 for high speed counting. Additionally, each counter has 6
parameters for proper configuration. The tables below describe each configuration
parameter and lists each compatible memory type for configuring counters.
Common Counter
Symbol description Compatible Instructions Range
①
Counting Mode (0-6) Input I01-I0C/i01-i0C
Use (I01~g1F) to set counting up or down Keypad input Z01-Z04/z01-z04
OFF: counting up (0, 1, 2, 3……) Output Q01-Q08/q01-q08
②
ON: counting down (……3, 2, 1, 0) Auxiliary coil M01-M3F/m01-m3F
Use (I01~g1F) to reset the counting value Auxiliary coil N01-N3F/n01-n3F
ON: the counter value reset to 0 Expansion input X01-X0C/x01-x0C
③
OFF: the counter continues to count Expansion output Y01-Y0C/y01-y0C
④
Counter current Value, range: 0~999999 RTC R01-R1F/r01-r1F
⑤
Counter preset Value, range: 0~999999 Counter C01-C1F/c01-c1F
⑥
Counter Code (C01~C1F total: 31 Counters) Timer T01-T1F/t01-t1F
Analog comparator G01-F1F/g01-g1F
Normal open contact Lo
※ The preset value of Counter could be a constant or other function current value.
Counter Mode 0 (Internal coil)
Mode 0 Counter (Internal Coil) used as internal auxiliary coils. No counter preset value. In the example below
shows the relationship among the numbered block diagram for a mode 0 counter, the ladder diagram view, and the
software Edit Contact/Coil dialog box.
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