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 |
|---|
| 3 |
Operands
| Operand | Description |
|---|---|
| S | The first operand. Entries are WORD data registers or constants. This is the time data to convert to seconds. This requires 3 data registers. |
| D | The second operand. Entries are only signed WORD data registers. This is where time data is converted into seconds. The resulting time range is 0 ~ 86,399. |
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 converting exceeds the data register assigned to D.
Data Register Format
The time data is formatted as follows before converting:
- The value from S is converted and saved into the data register D:
- S: Hour (0 ~ 23)
- S+1: Minute (0 ~ 59)
- S+2: Second (0 ~ 59)
Ladder Diagram Examples
SECOND

The SECOND instruction converts a WORD time data value, S, from hour, minute, and second into seconds and saves the conversion into an assigned DWORD second-formatted data register, D.

When the contact, M3.0, is powered ON (1), the time data data registers, D30, D31, and D32, are converted into DWORD second format.

The result of the conversion is saved in the DWORD second-formatted data register, D34.
Memory Monitor

SECONDP

The SECONDP one-shot instruction converts a WORD time data value, S, from hour, minute, and second into seconds and saves the conversion into an assigned DWORD second-formatted data register, D. Every time this instruction executes, it energizes the output only once.

When the contact, M3.5, is powered ON (1), the time data data registers, D46, D47, and D48, are converted into DWORD second format.

The result of the conversion is saved in the DWORD second-formatted data register, D50.
Memory Monitor

