9 Application Instructions API 150-199 API 175 Operands: S 1 : Floating point dividend S 2 : Floating point divisor D : Quotient Explanations: 1. S 1 and S 2 can be floating point values. 3. Flags: M1020 (zero flag), M1021 (borrow flag), M1022 (carry flag) 2. See the specifications of each model for their range of use. 4. In DDIVR instruction, floating point values (e.g. F1.2) can be entered directly into S 1 and S 2 or stored in register D for operation. When the instruction is being executed, operand D will store the operation result. 5. When S 1 and S 2 stores the floating point values in register D, their functions are the same as API 123 EDIV. 6.
If S 2 is “0”, the program will regard it as an operation error and the instruction will not be executed. M1067 and M1068 will be On and D1067 will record the error code H’0E19. 7. If the absolute value of the operation result is larger than the maximum floating point displayable, the carry flag M1022 will be On. 8. If the absolute value of the operation result is smaller than the minimum floating point displayable, the borrow flag 9. If the operation result is “0”, the zero flag M1020 will be On. M1021 will be On. Program Example 1:
When X0 = On, the floating point F1.20000004768372 will be divided by F2.20000004768372 and the result F0.545454561710358 will be stored in the data registers (D10, D11). Program Example 2: When X1 = On, the floating point value (D1, D0) ч floating point value (D11, D10) and the quotient will be stored in the registers designated in (D21, D20). X1 DVP-PLC Application Manual 9-87 Mnemonic Operands Function D DIVR P Floating Point Division Type OP Bit Devices Word Devices Program Steps X Y M S K H KnX KnY KnM KnS T C D E F DDIVR, DDIVRP:
13 steps S 1 * S 2 * D * PULSE 16-bit 32-bit EH3 ES EX SS SA SX SC EH SV EH3 SV2 ES EX SS EH3 ES EX SS SA SX SC EH SV SA SX SC EH SV SV2 SV2 X 0 DDIVR F1.20000004768372 F2.20000004768372 D10 1 DDIVR D0 D10 D20