Users manual

15-13

Chapter 15: Ladder Logic Programming

LEQ (LESS THAN OR EQUAL)

This instruction will test to see if Source A is less than or equal to Source B. If Source A is less

than or equal to Source B then the rung is evaluated as true, otherwise the rung is false. Source

A must be an address. Source B can either be a program constant (integer only) or an address.

The LEQ instruction executes in 15µs and requires 44 bytes.

Following is a list of the data points that may be used with LEQ instructions:

Inputs

Outputs

Timers(preset&value)

Counters(preset&value)

Ladder variables

C variables

Diagnostics

Alarms

GRT (GREATER THAN)

This instruction will test to see if Source A is greater than Source B. If Source A is greater than

Source B then the rung is evaluated as true, otherwise the rung is false. Source A must be an

address. Source B can either be a program constant (integer only) or an address.

The GRT instruction executes in 15µs and requires 44 bytes.

Following is a list of the data points that may be used with GRT instructions: