6 Application Instructions API 00-49 API 37 Operands: S : Start No. of the shifted device D : Start No. of the device to be shifted n 1 : Length of data to be shifted n 2 : Number of words to be shifted in 1 shift Explanations: 1. The type of devices designated by S and D has to be the same, e.g. K n X, K n Y, K n M, and K n S as a category and T, C, and D as another category. 2. Provided the devices designated by S and D belong to K n type, the number of digits of K n has to be the same. 3. Range of n 1 : 1~ 512 4. Range of n 2 : 1 ~ n 1 5. See the specifications of each model for their range of use. 6.
This instruction shifts the stack data of n 1 words starting from D to the left for n 2 words. S is shifted into D for n 2 words to supplement empty words. 7. This instruction adopts pulse execution instructions (WSFLP) Program Example: 2. The figure below illustrates the left shift of the words in one scan. 1. When X0 = Off→On, the 16 register stack data composed of D20 ~ D35 will shift to the left for 4 registers.
D35 ~ D32 → carry D31 ~ D28 → D35 ~ D32 D27 ~ D24 → D31 ~ D28 D23 ~ D20 → D27 ~ D24 D13 ~ D10 → D23 ~ D20 completed X0 K4 Left-shifiting for 4 registers Carry 5 1 3 4 2 DVP-PLC Application Manual 6-58 Mnemonic Operands Function WSFL P Word Shift Left Type OP Bit Devices Word Devices Program Steps X Y M S K H KnX KnY KnM KnS T C D E F WSFL, WSFLP: 9 steps S * * * * * * * D * * * * * * n 1 * * n 2 * * PULSE 16-bit 32-bit EH3 SV2 ES EX SS EH3 ES EX SS SA SX SC EH SV EH3 SV2 ES EX SS SA SX SC EH SV SA SX SC EH SV SV2 WSFLP D10 D20 K16 D13 D12 D11 D10 D35 D34 D33 D32 D31 D30 D29 D28 D27 D26 D25 D24 D23 D22 D21 D20