Negation (WORD)
Instruction Parameters
Supported PLC Series
| XPnA/1R | XPnB | XPnE | XPnF | CP3A/B/P/U CP4A~D/U | CPnE | CPnF | BP | PLC-S |
|---|---|---|---|---|---|---|---|---|
| ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Supported Data Registers
| M | X | Y | K | L | F | T | C | S | Z | R | Q | D | @D | Constant | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D | ✓ | - | ✓ | ✓ | ✓ | - | ✓ | ✓ | - | ✓ | ✓ | ✓ | ✓ | ✓ | - |
Supported Flags
| Flag | Bit | Support |
|---|---|---|
| Error | F11.0 | ✓ |
| Zero | F11.1 | - |
| Carry | F11.2 | - |
Number of Steps
| Steps |
|---|
| 2 |
Operands
| Operand | Description |
|---|---|
| D | The only operand. Entries are only WORD data registers. This is the value to negate. This is where the negation is stored. The signed value range is -32,768 ~ 32,767 (216). The unsigned value range is 0 ~ 65,535 (216-1). The Hexadecimal value range is H0000 ~ HFFFF. |
Notice
Error Flag (F11.0) Notice
The error flag, F11.0, will be ON for one scan when the address of the data register assigned by @D exceeds the range of the data register, D. The range of the data register, D, is dependent on the CPU type.
Instruction Behavior
The NEG and NEGP instructions behave as follows:
- If the initial value for the data register, D, is positive and the NEG or NEGP instruction is executed, the resulting negation value D is negative.
- If the initial value for the data register, D, is negative and the NEG or NEGP instruction is executed, the resulting negation value D is positive.
- If the initial value for the data register, D, is signed and -32,768, negation will NOT occur, and the data register, D, will remain -32,768.
Execution Condition
It is recommended that the NEG instructions be used with a pulse contact as an execution condition, or use the NEGP instruction.