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P-NET SWNo. 22: PICode
The content of this register defines the function of the PI-regulator and the current output
(where in determines the calculation of the input signal and out determines control direc-
tion for the current output). The register also holds an operation mode selector (Man-
ual/Auto).
The data type for PICode is a LongInteger, which may be considered as 8 digits in hexa-
decimal readout. The first 6 digits represent and select an optional function. Digits 7 and 8
are not used and should be set to 0. The information must be interpreted as shown below
(only digits 1 to 6 are applicable to the PD 210 display unit):
Dig. 1 Dig. 2 Dig. 3 Dig. 4 Dig. 5
0
0
0
0
1
2
3
P-NET SWNo. 23: MeterNumber
The meter head serial number may be retrieved from this register. This number is set by
PROCES-DATA and is used for service purposes only. The serial number is printed on the
side of the Flow Transmitter meter head.
Note: If the electronics module was delivered as a stand-alone module, E4 will hold the 6
least significant digits of the electronics module's own serial number, which is printed on
the module. For example, if the serial number is 20005176, E4 will hold 005176.
P-NET SWNo. 24: Scale
This register is used for the scaling of Output3 when it is used as a pulse output or current
output.
If the Output3 function is for pulse output , 0 to 1000 Hz, the number of volume units per
pulse is defined in Scale.
Example: The meter size (MeterSize is read in E1 at the PD 210 display unit) is 20000 litres
per hour. The requirement is for 0.01 litres per pulse on Output3 (equal to 100 pulses per
litre). The figure 0.01 is therefore inserted in Scale (E5 on PD 210).
In this example a flow of 20000 litres per hour will give an Output3 frequency of
0.01
Manual
PD 210 display address: E3, PI-regulator function
Regulator Function
in=setpoint-data
0
out 0-100%: 4-20mA
in=data-setpoint
out 0-100%: 4-20mA
in=setpoint-data
out 0-100%: 20-4mA
in=data-setpoint
out 0-100%: 20-4mA
PD 210 display address: E4, Meternumber
PD 210 display address: E5, Output3 scaling
20000
l/h
=
l/pulse
x
3600
sec
/h
Flow Transmitter, PD 340
Dig. 6
Regulator
operation mode
Auto
Manual
Input ON =>
manual operation
555
.
5
pulses/
sec
502 010 05
Dig. 7 Dig. 8
0
0
33/55
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