7 Application Instructions API 50-99 API 78 Operands: m 1 : No. of special module m 2 : CR# in special module to be read D : Device for storing read data n : Number of data to be read at a time Explanations: 1. Range of m 1 (16-bit and 32-bit): for ES/SA: 0 ~ 7, for EH/EH2/EH3/SV2 :0 ~ 255, for SV: 0 ~ 107. 2. Range of m 2 (16-bit and 32-bit): for ES/SA: 0 ~ 48, for EH: 0 ~ 254, for EH2/SV/EH3/SV2: 0 ~ 499. 3. Range of n : a) 16-bit: for ES/SA: 1 ~ (49 – m 2 ), for EH: 1 ~ (255 – m 2 ), for EH2/SV/EH3/SV2: 1 ~ (500 – m 2 ). b) 32-bit: for ES/SA: 1 ~ (49 – m 2 )/2, for EH: 1 ~ (255 – m 2 )/2, for EH2/SV/EH3/SV2: 1 ~ (500 – m 2 )/2. 4.
ES series MPU does not support E, F index register modification. 5. m 1 , m 2 and n of EH series MPU do not support word device D. 6. This instruction is for reading the data in the CR in special modules. 7. The 16-bit instruction can designate D = K1 ~ K4; the 32-bit instruction can designate D = K1 ~ K8. 8. See application examples in API 79 TO insitruction for how to calculate the No. where the special module is located. Program Example: 1. Read CR#29 of special module No.0 into D0 and CR#30 into D1. Only 2 groups of data is read at a time (n = 2). 2. When X0 = On, the instruction will be executed. When X0 = Off, the instruction will not be executed and the data read will not be changed.
X0 DVP-PLC APPLICATION MANUAL 7-92 Mnemonic Operands Function D FROM P Read CR Data in Special Modules Type OP Bit Devices Word Devices Program Steps X Y M S K H KnX KnY KnM KnS T C D E F FROM, FROMP: 9 steps DFROM, DFROMP: 17 steps m 1 * * * m 2 * * * D * * * * * * * * n * * * PULSE 16-bit 32-bit EH3 SV2 EH3 EH3 ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV SV2 SV2 FROM K0 K29 D0 K2