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No. Action
Picture
follows
26 Switch differential thickness measurement mode (slave) on / off:
Q
Q
1
OK
I
C
FA
push
25x
7.2.3
Differential measurement mode
INFORMATION
Only FT 80 RLA sensors with serial interface (version S1) can be used for differential measure-
ment.
Simultaneous connection to PLC control or a PC via the RS485 interface is not possible with
differential measurement.
With this measuring procedure, two FT 80 RLA-S1 sensors are connected to one another. The sensors are positi-
oned opposite each other (differential thickness measurement, function no. 26). With differential thickness measure-
ment, the measuring ranges can overlap (1), be directly adjacent (2) or apart (3) (illustr. 20).
If a sensor is set as master or slave, communication with the PC is not possible.
1
2
3
A. The following steps must be carried out for differential measurement:
INFORMATION
We recommend resetting sensors to factory setting (function 22, or 7.2.2) before configuration of
sensors as master or slave.
When using two sensors, measuring errors (resolution, response time, non-linearity, etc.) have to
be multiplied by factor 2 with differential thickness measurement.
1. Mounting: Position reference object (target value) in measuring range and mount both FT 80 RLA-...(S1 types) in
a way that the distance to the object is always within the operating range of the sensors (illustr. 20 and 22).
2. Interlink sensors according to wiring diagram and connect them electrically (illustr. 21).
58
Action
Reaction / Status indicator „ZA" (red)
Switch with
ON, differential thickness measurement mode
2
slave active
SET
OFF, differential thickness measurement mode
slave inactive
Description of function - sensors positioned opposite each other (see chapter 7.2.3).
Measuring range
FT 80 RLA Disctance sensor - GB - 068-13715 - 01.09.2014-05
Mounting and
operating instructions
Factory setting
Inactive
(„ZA" = OFF)
Illustr. 20
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