AH500 Programming Manual API 1104 Symbol: S ： Device in which the data is shifted Word D ： Initial device Word n ： Data length Word Explanation: 1. The data in the n word devices starting from the device specified by D is defined as a first in, first out data type, and the device specified by D is taken as a pointer. When the instruction is executed, the value of the pointer increases by one, and the data in the device specified by S is written into the device specified by the pointer. When the value of the pointer is larger than or equal to n -1, the instruction does not process the writing of the data, and the carry flag SM602 is ON. 2. Generally, the pulse instruction SFWRP is used. 3.
The operand n should be within the range between 2 and 512. Example: 1. The value of the pointer D0 is cleared to 0 first. When X0.0 is switched from OFF to ON, the data in D20 is written into D1, and the value in D0 becomes 1. When X0.0 is switched from OFF to ON again, the data in D20 is written to D2, and the value in D0 becomes 2. 2. The data in the word device is shifted and written in the following way. The data in D20 is written into D1. The value in D0 becomes 1.
6-244 Instruction code Operand Function SFWR P S, D, n Shifting the data and writing it into the word device Device X Y M S T C HC D L SM SR E PR K 16# “$” DF S D n Pulse instruction 16-bit instruction (7 steps) 32-bit instruction AH500 AH500 -