26
WIKA operating instructions, model GDM-RC-100-T
EN
14499439.01 01/2022 EN/DE
The characters within one message may not have spacing of more than 1.5 characters.
Examples of a typical transmission:
Intermission Message 1
▶
Intermission Message 2
▶
Intermission Message 3 ...
Valid function calls
Function Designation
Description
03
Read holding registers
Reading of one/more register values or the instrument
configuration
04
Read input register
Reading a register value or the instrument configuration
06
Write single register
Writing a register value or the instrument configuration
16
Write multiple registers
Writing of one/more register values or the instrument
configuration
08
Diagnostic -
Sub code 00
Diagnostic function
23
Read/write multiple
registers configuration
Writing or reading of one/several register values or the
instrument configuration
5.6.2.5 Data register, measured values
Measured values can only be read and not written.
Model GD-20
Register Measurand
Unit
Based on
00000
Pressure (abs.)
p
bar
Absolute pressure
00002
Pressure (abs.)
p
MPa
Absolute pressure
00004
Pressure
p
Pa
Absolute pressure
00006
Pressure
p
kPa
Absolute pressure
00008
Pressure
p
psi
Absolute pressure
00010
Pressure
p
N/cm²
Absolute pressure
00012
Temperature
T
°C
00014
Temperature
T
K
00016
Temperature
T
°F
00018
Gas density
rho g/l
00020
Gas density
rho kg/m³
00022
Pressure standard-
ised to 20 °C [68 °F]
p20 bar
Absolute pressure at 20 °C [68 °F]
00058
Pressure standard-
ised to 20 °C [68 °F]
p20 bar (gauge
pressure)
Gauge pressure at 20 °C [68 °F]
based on 1,013 mbar
5. Commissioning, operation