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 DWORD data registers. This is the starting register to find the largest possible number. 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. This is where the minimum value found and its data register are saved. This requires 1 DWORD (D~D+1) and 2 WORD (D+2 & D+3) data registers. |
| n | The third operand. Entries are WORD data registers or constants. This is the amount of data registers to search through starting at D. The value range is 1 ~ 32,767 (215-1). |
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 exceeds the value range 1 ~ 32,767 (215-1).
Instruction Behavior
The DMIN and DMINP instructions behave as follows:
- Both instructions require 4 data registers starting at the data register, D.
- D and D+1 save the minimum number found in the search range.
- D+2 saves the first occurrence index of the minimum number found in the search range.
- D+3 saves the amount of times the minimum number was found in the search range.
- If n is less than 1 or greater than 32,767, neither instruction will execute.
Ladder Diagram Examples
DMIN
The DMIN instruction searches n number of DWORD data registers, starting at S, for the minimum possible value. The result of the search is saved in 4 assigned DWORD data registers starting at D.
When the contact, M1.5 is ON (1), the instruction finds the minimum DWORD value of 4 data registers, D15, D17, D19, and D21. The smallest value found is saved in D24. The position in which the data register was found is saved in D26. The total amount of times the number is found is saved in D27.
Result
DMINP
The DMINP one-shot instruction searches n number of DWORD data registers, starting at S, for the minimum possible value. The result of the search is saved in 4 assigned DWORD data registers starting at D. Every time this instruction executes, it energizes the output only once.
When the contact, M1.6 is ON (1), the instruction finds the minimum DWORD value of 3 data registers, D30, D32, and D34. The smallest value found is saved in D37. The position in which the data register was found is saved in D39. The total amount of times the number is found is saved in D40.
Result
