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 OFF. When the bit is 1, the contact is ON. |
Notice
Contact Orientation
The LD contact orientation behaves as follows:
- The LD contact orientation indicates the logical start by creating an ON or OFF execution condition based on the ON status of the assigned BOOL data register.
- The LD 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 LD contact orientation creates an execution condition based on the ON status of the assigned BOOL data register, S.
When the open contact, M24.5, is powered OFF, the coil, Y3.3, is deenergized.
When the open contact, M24.5, is powered ON, the coil, Y3.3, is energized.