Instruction Parameters
Supported PLC Series
| PLC-AES | PLC-FB | PLC-ES |
|---|---|---|
| ✓ | ✓ | ✓ |
Supported Data Registers
| M | X | Y | K | L | F | T | C | S | Z | R | Q | D | @D | Constant | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S1 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | ✓ | – | ✓ | ✓ | ✓ | – |
| S2 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | ✓ | – | ✓ | ✓ | ✓ | ✓ |
| D | ✓ | – | ✓ | ✓ | ✓ | – | ✓ | ✓ | – | ✓ | – | ✓ | ✓ | ✓ | – |
| n | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Supported Flags
| Flag | Bit | Support |
|---|---|---|
| Error | F11.0 | ✓ |
| Zero | F11.1 | – |
| Carry | F11.2 | – |
Number of Steps
| Steps |
|---|
| 5 |
Operands
| Operand | Description |
|---|---|
| S1 | The first operand. Entries are only WORD data registers. The signed value range is for each data register -32,768 ~ 32,767 (216). The unsigned value range for each data register is 0 ~ 65,535 (216-1). The Hexadecimal value range for each data register is H0000 ~ HFFFF. |
| S2 | The second operand. Entries are WORD data registers or constants. The signed value range for each data register is -32,768 ~ 32,767 (216). The unsigned value for each data register range is 0 ~ 65,535 (216-1). The Hexadecimal value for each data register range is H0000 ~ HFFFF. |
| D | The third operand. Entries are only WORD data registers. This is where the result of a logical S1 XOR S2 is saved. |
| n | The fourth operand. Entries are WORD data registers or constants. This is the amount of words for a logical S1 ~ Sn XOR S2 ~ Sn. |
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. F11.0 turns ON when the value of the data for a logical XOR exceeds the data register assigned to S1 or S2.
Logical Operation
The BKXOR and BKXORP instructions will perform a logical XOR on each bit of the data registers between S1 ~ Sn and S2 ~ Sn.
Ladder Diagram Examples
BKXOR
The BKXOR instruction performs a logical XOR on n number of WORD data registers starting at S1 and n number of data registers starting at S2 and saves the result in an assigned WORD data register, D.
When the contact, M10.1, is powered ON (1), logical XOR operations are performed on 3 WORD data registers, D20, D21, and D22, with another 3 WORD data registers, D24, D25, and D26. The results of the logical XOR operations are saved in 3 WORD data registers, D28, D29, and D30.
Memory Monitor
The below image shows the direct logical XOR operations for each data register.
BKXORP
The BKXORP one-shot instruction performs a logical XOR on n number of WORD data registers starting at S1 and n number of data registers starting at S2 and saves the result in an assigned WORD data register, D. Every time this instruction energizes, it executes only once.
When the contact, M10.2, is powered ON (1), logical XOR operations are performed on 4 WORD data registers, D30, D31, D32, and D33, with another 4 WORD data registers, D35, D36, D37, and D38. The results of the logical XOR operations are saved in 4 WORD data registers, D40, D41, D42, and D43.
Memory Monitor
The below image shows the direct logical XOR operations for each data register.
