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 | ✓ | – | ✓ | ✓ | ✓ | – | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| n | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
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 NIBBLE data registers. This is the data to be linked. |
| D | The second operand. Entries are only WORD data registers. This is where the linked data of S is saved. |
| n | The third operand. Entries are WORD data registers or constants. This is the amount of NIBBLEs to link. The value range is 1 ~ 4. |
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 n is not in range of 1 ~ 4.
Instruction Behavior
The UNI and UNIP instructions behave as follows:
- When less than 4 NIBBLEs are linked, the more significant bits of the data register, D, are set to OFF (0).
- The least significant NIBBLE stored in the data register, S, is distributed to the bit 0 ~ 3 of the data register, D.
Ladder Diagram Examples
UNI
The UNI instruction links n number of NIBBLEs of the data register, S, and saves the linked value in an assigned WORD data register, D.
When the contact, M0.0 is ON (1), the instruction links 3 NIBBLEs in the data registers, D0, D1, and D2. The result is saved in D4.
Memory Monitor
UNIP
The UNIP one-shot instruction links n number of NIBBLEs of the data register, S, and saves the linked value in an assigned WORD data register, D. Every time this instruction executes, it energizes the output only once.
When the contact, M0.0 is ON (1), the instruction links 4 NIBBLEs in the data registers, D5, D6, D7, and D8. The result is saved in D10.
Memory Monitor
