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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | ✓ | – | ✓ | ✓ | ✓ | – | ✓ | ✓ | – | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| D | ✓ | – | ✓ | ✓ | ✓ | – | ✓ | ✓ | – | ✓ | ✓ | ✓ | ✓ | ✓ | – |
Supported Flags
| Flag | Bit | Support |
|---|---|---|
| Error | F11.0 | ✓ |
| Zero | F11.1 | – |
| Carry | F11.2 | – |
Number of Steps
| Steps |
|---|
| 4 |
Operands
| Operand | Description |
|---|---|
| S | The first operand. Entries are only DWORD data registers. The value of this data register will be exchanged with D. The signed value range is -2,147,483,648 ~ 2,147,483,647 (232). The unsigned value range is 0 ~ 4,294,967,295 (232-1). The Hexadecimal value range is H00000000 ~ HFFFFFFFF. |
| D | The second operand. Entries are only DWORD data registers. The value of this data register will be exchanged with S. The signed value range is -2,147,483,648 ~ 2,147,483,647 (232). The unsigned value range is 0 ~ 4,294,967,295 (232-1). The Hexadecimal value range is H00000000 ~ HFFFFFFFF. |
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.
Execution Condition
It is recommended that the DXCH instructions be used with a pulse contact as an execution condition, or use the DXCHP instruction.
Ladder Diagram Examples
DXCH
The DXCH instruction exchanges the value in the DWORD data register, D1, with the value in the DWORD data register, D2.
When the contact, M0.0, is powered ON (1), the instruction exchanges the value of the DWORD data register, D10, with the data register, D13.
Memory Monitor
DXCHP
The DXCHP one-shot instruction exchanges the value in the DWORD data register, D1, with the value in the DWORD data register, D2. Every time this instruction executes, it energizes the output only once.
When the contact, M0.1, is powered ON (1), the instruction exchanges the value of the DWORD data register, D16, with the data register, D19.
Memory Monitor
