10 Application Instructions API 202-313 API Mnemonic FLD ※ 275~ 280 Operands: S 1 : Source device 1 S 2 : Source device 2 Explanations: 1. EH2/SV_V1.9 and versions above, and EH3/SV2 supports the function. EH series does not support the dunction. 2. This instruction compares the content in S 1 and S 2 . Take API275 (FLD=) for example, if the result is “=”, the continuity of the instruction is enabled. If the result is “≠”, the continuity of the instruction is disabled. 3. The user can specify the floating point value directly into operands S 1 and S 2 (e.g. F1.2) or store the floating 4. FLD ※ ( ※ : =, >, , ≤, ≥) instruction is used for direct connection with left hand bus bar.
point value in D registers for further operation. Program Example: When the content in D200 (D201) ≤ F1.2 and X1 is ON, Y21 = ON and latched. X1 DVP-PLC Application Manual 10-30 Operands Function Floating Point Contact Type Comparison Type OP Bit Devices Word devices Program Steps X Y M S K H KnX KnY KnM KnS T C D E F FLD※: 9 steps S 1 * * * S 2 * * * PULSE 16-bit 32-bit SA SX SC EH SV EH3 SV2 ES EX SS SA SX SC EH SV EH3 SV2 ES EX SS SA SX SC EH3 ES EX SS EH SV SV2 API No.
32 -bit instruction Continuity condition Discontinuity condition 275 FLD＝ S ＝S 1 2 S ≠S 1 2 276 FLD＞ S ＞S 1 2 S ≦S 1 2 277 FLD＜ S ＜S 1 2 S ≧S 1 2 278 FLD＜＞ S ≠S 1 2 S ＝S 1 2 279 FLD＜＝ S ≦S 1 2 S ＞S 1 2 280 FLD＞＝ S ≧S 1 2 S ＜S 1 2 FLD D200 F1.2 SET Y21