Dr. A. Kuntze Neon pR, Руководство пользователя

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16. Add-on Modbus RTU
Dr. A. Kuntze I Gutes Wasser mit System Robert-Bosch-Str. 7a
40668 Meerbusch
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16. Add-on Modbus RTU
A serial interface RS 485 Modbus RTU is available as add-on. This add-on needs
additional hardware. You have to install the RS circuit board in the instrument,
observing the ESD directives, and activate the feature with the appropriate add-on
code.
When setting up a bus with several instruments, mind that the instruments are
connected in line, not radially. Both ends of a long bus connection should be
terminated with termination resistors of 120 Ohm. With Neon instruments, you can
activate the termination via menu.
Note Activate the bus termination only at the ends of the line. If you
activate terminations somewhere inbetween, this might cause
malfunction in the bus communication.
Select the symbol IN/OUT in the main menu and in
the submenu, select the symbol NETWORK. Here
you can set the following parameters:
Bus address
Assign a different number to each instrument in your
bus system. With this number, you can address the
instrument from the master instrument to read out
data.
Bus termination
If you select ON from the drop-down list, the
termination is activated for this instrument.