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WIKA operating instructions, model GDM-RC-100-T
EN
14499439.01 01/2022 EN/DE
5.6.2 Modbus
®
tool
The software is available, free-of-charge, from the WIKA website.
After wiring and installing the software of the interface converter or copying the
Modbus
®
tool software, the program can be started.
System requirements
at least Microsoft
®
Windows
®
7 (32-bit)
Windows is a registered trademark of Microsoft Corporation in the United States and other countries.
5.6.2.1 Factory settings
The COM port allocated by the interface converter on the PC must be set for access
to the gas density sensor. Upon delivery, the address is set to 247 and the baud rate is
configured to customer specification.
With these settings, the gas density sensors can be read via the button “Read from
instrument”.
Configuration
■
TAG number: WIKA
■
Address: 247
■
Baud rate: Customer-specific
■
Parity: Customer-specific
5.6.2.2 Writing new parameters
Take note of the new communication parameters before writing them, as the parameters
will be required again for any new access to the gas density sensor.
Write the new values in the right fields (below the button “Write on instrument”).
Designation
Valid values
TAG number
16 characters in ASCII code
Address
1 ... 247
Baud rate
1,200 ... 115,200
Parity
None, Even
By pressing the button “Write on instrument” the data in the fields is transmitted to the
instrument register. To finish the writing operation, interrupt the voltage supply of the gas
density sensor after the transmission before restoring it.
Afterwards, during the reading operation, the entered data becomes visible on the left-
hand side.
5. Commissioning, operation