Siemens 420 manual Motorized potentiometer MOP, Selecting via serial interfaces

3 Functions Issue 07/04

3.9Motorized potentiometer (MOP)

Parameter range:	P1031 – r1050
Warnings	-
Faults	-
Function chart number:	FP3100

This function emulates an electromechanical potentiometer to enter setpoints. The motorized potentiometer value is adjusted using the "Raise" and "Lower control signal" which is selected using BICO parameters P1035 and P1036 (refer to Fig.

3-34). The value which has been set is available through connector output r1050 so that it can be further connected and used.

DIN		"1"
	P0840	"0"
				t
BOP
		"1"
USS	P1035	"0"		t
BOP link
		"1"
USS
	P1036	"0"
COM link				t
CB
		f
COM link
		P1082
		P1080
		P1120	P1121	t
		-P1080
			r1050	fact
		-P1082

Fig. 3-34 Motorized potentiometer

Selecting via serial interfaces

The MOP functionality can be selected via the operator panels (refer to Section 3.1.3), digital inputs as well as via serial interfaces (refer to the example). Parameterization is also possible directly using BICO parameters P1035 and P1036 as well as also parameters P0700 and P0719. In this case, for a value assigned to P0700, the BICO parameter is appropriately modified.

Example: Command source via "USS on BOP link" interface

a) Standard method	→	P0700	= 4
b) BICO method	→	P1035	= 2032.13
		P1036	= 2032.14
		::::
		(refer to P0700 for a complete list)

MICROMASTER 420	Operating Instructions
102	6SE6400-5AA00-0BP0