5. Commissioning, operation
The characters within one message may not have spacing of more than 1.5 characters.
Examples of a typical transmission:
EN
Intermission Message 1
Valid function calls
Function
Designation
03
Read holding registers
04
Read input register
06
Write single register
16
Write multiple registers
08
Diagnostic -
Sub code 00
23
Read/write multiple
registers configuration
5.4.2.5 Data register, measured values
Measured values can only be read and not written.
Model GD-20
Register
Measurand
00000
Pressure (abs.)
00002
Pressure (abs.)
00004
Pressure
00006
Pressure
00008
Pressure
Pressure
00010
00012
Temperature
00014
Temperature
00016
Temperature
00018
Gas density
00020
Gas density
00022
Pressure standar-
dised to 20 °C [68 °F]
20
▶
Intermission Message 2
Description
Reading of one or more register values or the instru-
ment configuration
Reading a register value or the instrument configuration
Writing a register value or the instrument configuration
Writing of one or more register values or the instrument
configuration
Diagnostic function
Writing or reading of one/several register values or the
instrument configuration
Unit
p
bar
p
MPa
p
Pa
p
kPa
p
psi
p
N/cm²
T
°C
T
K
T
°F
rho
g/l
rho
kg/m³
p20
bar
WIKA operating instructions gas density sensor, model GD-20
▶
Intermission
Message 3
Based on
Absolute pressure
Absolute pressure
Absolute pressure
Absolute pressure
Absolute pressure
Absolute pressure
Absolute pressure at 20 °C [68 °F]
...