GE (Greater Than or Equal)
Returns TRUE when first input is greater than or equal to second input.
The GE (Greater Than or Equal) comparison function returns TRUE when the first input is greater than or equal to the second input. It is commonly used for setpoint comparisons, minimum threshold checks, and range validation in PLC programs.
Parameters
Inputs
| Name | Type | Description |
|---|---|---|
| IN1 | ANY_NUM | First value |
| IN2 | ANY_NUM | Second value |
Outputs
| Name | Type | Description |
|---|---|---|
| OUT | BOOL | TRUE when IN1 >= IN2 |
Ladder Logic Example
// Ladder Logic - GE Comparison // // |----[GE]---( Level_OK )----| // | IN1: Tank_Level | // | IN2: Min_Level (20.0) |
Structured Text Example
Level_OK := (Tank_Level >= Min_Level);
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Platform-Specific Implementation
Siemens (TIA Portal)
Use CMP >= instruction in TIA Portal.
Allen-Bradley (Studio 5000)
Use GEQ (Greater Than or Equal) instruction.
CODESYS
Use >= operator in ST or GE function block.
Common Applications
- Minimum level/threshold checks
- Setpoint reached detection
- Permit conditions
- Batch quantity verification
Frequently Asked Questions
What is GE (Greater Than or Equal) in PLC programming?
Returns TRUE when first input is greater than or equal to second input. The GE (Greater Than or Equal) comparison function returns TRUE when the first input is greater than or equal to the second input. It is commonly used for setpoint comparisons, minimum threshold checks, and range validation in PLC programs.
What are common applications of GE (Greater Than or Equal)?
GE (Greater Than or Equal) is commonly used for: Minimum level/threshold checks, Setpoint reached detection, Permit conditions, Batch quantity verification.
How do I use GE (Greater Than or Equal) in different PLC platforms?
Siemens: Use CMP >= instruction in TIA Portal. Allen-Bradley: Use GEQ (Greater Than or Equal) instruction. CODESYS: Use >= operator in ST or GE function block.
Related Function Blocks
GT (Greater Than)
Returns TRUE when first input is strictly greater than second input.
View Reference →LE (Less Than or Equal)
Returns TRUE when first input is less than or equal to second input.
View Reference →EQ (Equal)
Returns TRUE when both inputs are exactly equal.
View Reference →NE (Not Equal)
Returns TRUE when inputs are not equal to each other.
View Reference →LT (Less Than)
Returns TRUE when first input is strictly less than second input.
View Reference →Stop Writing Ladder Logic From Scratch
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