Data Register, Measured Values - WIKA GD-20 Mode D'emploi

5. Commissioning, operation
Communication via messages
General form of the messages
Instrument address
8 bit
EN
In accordance to Modbus
The characters within one message may not have spacing of more than 1.5 characters.
Examples of a typical transmission:
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.)
52
Function
8 bit
specification, separate messages must be divided by a break of at least 3.5 characters.
®
▶
Intermission Message 2
Description
Reading of one or more register values or the instrument 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
p
p
Data
n x 8 bit
▶
Intermission
Unit Based on
bar Absolute pressure
MPa Absolute pressure
WIKA operating instructions gas density sensor, model GD-20
CRC check
16 bit
Message 3 ...