Rice Lake PR5230 Fieldbus Transmitter - Manual (Page 151)

PR 5230 Instrument Manual Commissioning
Sartorius EN-151
Example:
The output signal (Limit 1 out) of limit 1 switches
OFF above a weight of 900 kg. The output signal
(Limit 2 out) of limit 2 switches OFF below a
weight of 290 kg. Both limit values have a
hysteresis of 10 kg.
In the event of a power failure, the two outputs
go to OFF, thus indicating underfill and overfill at
the same time.
If the limits (Limit 1 and Limit 2) for 'On' and 'Off'
are equal (on = off), output 1 (Limit 1 out)
switches ON, when the weight (Wgt) exceeds the
value and output 2 (Limit 2 out) switches OFF,
when the weight drops below the value.
1. Determining an action
Determine the action for the rising edge of the reference signal under [Limit 1 on] from the following list
(here: Marker 1 is set when 900 kg are exceeded).
Accordingly, an action for [Limit 1 off] can be determined.
Setup/ Limit parameter
Limit 1 on 900 kg
Action set marker 1 X64=1
Condition no condition -----
Function SPM Bit
-no action- ----- no function
set marker 1 X64=1 Set marker 1
set marker 2 X65=1 Set marker 2
set marker 3 X66=1 Set marker 3
clr marker 1 X64=0 Clear marker 1
clr marker 2 X65=0 Clear marker 2
clr marker 3 X66=0 Clear marker 3
Note:
The limit values can be assigned to the outputs directly in the I/O parameters.