Sensaphone SCADA 3000 Users manual - Manual (Page 171)

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Chapter 15: Ladder Logic Programming
C variables
Diagnostics
Alarms
SUB (Subtraction)
The SUB instruction subtracts the value stored in the memory location referenced by Source
B from the value stored in the memory location referenced by Source A when rung conditions
are true. The result is stored in the destination memory location. The operand values can be
fixed constants, values contained in I/O, or variables stored in any memory location. Only one
constant can be used in Source A or B.
The SUB instruction executes in 15µs and requires 58 bytes.
Following is a list of the data points that may be used with SUB instructions:
Valid Sources Valid Destinations
Inputs Outputs
Outputs
Ladder variables
Timers (preset & value) C Variables
Counters (preset & value)
Ladder variables
C variables
Diagnostics
Alarms
mULT (multiplication)
The MULT instruction multiplies the values stored in the two referenced memory locations,
labeled as Source A and Source B when rung conditions are true. The result is stored in the
destination memory location. The operand values can be fixed constants, values contained in
I/O, or variables stored in any memory location. Only one constant can be used in Source A or
B.
The MULT instruction executes in 15µs and requires 68 bytes.
Following is a list of the data points that may be used with MULT instructions:
Valid Sources Valid Destinations
Inputs Outputs
Outputs
Ladder variables
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