Siemens 420 manual Binary-coded selection + on command, R0722.1

Issue 07/04 3 Functions

Binary-coded selection + ON command

Using this technique up to 8 fixed frequencies can be selected using 3 control signals. These control signals are either entered via digital inputs or a serial communications interface. The fixed frequencies are indirectly selected using the binary coding (refer to Table 3-15, → e.g. selected using the digital DIN inputs), whereby the selection is combined with the ON command.

Table 3-15 Example for binary coding via digital inputs

		DIN3	DIN2	DIN1
0 Hz	FF0	0	0	0
P1001	FF1	0	0	1
P1002	FF2	0	1	0
…	…	…	…	…
…	…	…	…	…
P1006	FF6	1	1	0
P1007	FF7	1	1	1

Contrary to "Direct selection + ON command", the ON command is only active if the setting for the first 3 binary inputs is set to "Binary-coded selection + ON command" or P0701 = P0702 = P0703 = 17. The following is obtained analog to the above example:

a)	Standard method	→	P0701	= 17
b)	BICO method	→	P0701	= 99, P1020 = 722.0, P1016 = 3

P0701 = 17 or P0701 = 99, P1020 = 722.0, P1016 = 3
P0702 = 17 or P0702 = 99, P1021 = 722.1, P1017 = 3
			P1016
		P1020	1
DIN1	r0722.0
		0	2,3
			P1017
		P1021	1
DIN2	r0722.1
	. .	0	2,3	...
	.		Fixed frequency 1
	.			0	0	1
			-650.00 ... 650.00 [Hz]
			P1001.D.(0.00)		.	CO: Act. FF
			.		.	r1024
			.		.
			Fixed frequency 7
			-650.00 ... 650.00 [Hz]	1	1	1
			P1007.D (30.00)

Fig. 3-33 Example for selecting FF1 via DIN1 and FF2 via DIN2 using the binary-coded method

MICROMASTER 420	Operating Instructions
6SE6400-5AA00-0BP0	101