Connection Requirements
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 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | ✓ | ✓ | – | – |
Supported Flags
| Flag | Bit | Support |
|---|---|---|
| Error | F11.0 | – |
| Zero | F11.1 | – |
| Carry | F11.2 | – |
Number of Steps
| Steps |
|---|
| 1 |
Operands
| Operand | Description |
|---|---|
| S | This is the BOOL data register. This is the bit number to toggle the contact ON/OFF. When the bit is 0, the contact is ON. When the bit is 1, the contact is OFF. |
Notice
Contact Orientation
The LDI closed contact orientation behaves as follows:
- The LDI closed contact orientation indicates the logical start by creating an ON or OFF execution condition based on the OFF status of the assigned BOOL data register.
- The LDI contact orientation is connected to the bus bar or at the beginning of the logic block by ANB or ORB.
Ladder Diagram Examples
LD Gate Example
The LDI closed contact orientation creates an execution condition based on the OFF status of the assigned BOOL data register, S.
When the closed contact, M24.5, is powered OFF, the coil, Y3.3, is deenergized.
When the closed contact, M24.5, is powered ON, the coil, Y3.3, is energized.