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Is it necessary to use all three inputs to use the binary coded fixed frequencies function?

April 26, 2017binary coded fixed frequencies function inputs necessary

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Is it necessary to use all three inputs to use the binary coded fixed frequencies function?

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No, you can use this with as few inputs and frequencies as you require.The binary inputs (p0701 etc.) and set point selection (P1000) should be set as normal. However you must set another parameter to enable the ON command simultaneously because the binary coding is dependent on 3 (4) bits.Example – To use DIN1 and DIN2 to achieve binary coded selection of FF1, FF2, and FF3 as well as giving the ON command from DIN1 or DIN2, the parameters must be set as follows:P0003 = (access level 3) P0700 = 2 (control via terminals) P0701 = 17 (DIN1: binary coded FF+ON) P0702 = 17 (DIN2: binary coded FF+ON) P1000 = 3 (set point selection: fixed frequencies) P1018 = 3 (fixed frequency selection mode, bit 2: this must be manually set to 3 to enable the full binary coded functionality with ON. It is not necessary to set the mode for bits 0 and 1 as setting P0701 and P0702 = 17 automatically sets P1016 and P1017 =3).