KROHNE Summit 8800 Vol 2 - Manual (Page 61)

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08/2013 - MA SUMMIT 8800 Vol2 R02 en
SUMMIT 8800 HARDWARE DETAILS 05
5 .2 .1 .2 Serial
Most modern flowmeters, like ultrasonic and Coriolis are smart and can communicate via a
serial port. This will allow the SUMMIT 8800 to take not only the flow rate but also diagnostic
information. This can often be used in parallel with pulses.
For such meters, often the modbus master protocol applies. Except for the standard serial set-
tings (see volume 3), the master type must be chosen from gas or liquid ultrasonic or Coriolis.
Also choose the way the meter is connected:
• Single: one meter is connected to the serial link
• Multiple: multiple meters are connected to in multi-drop on a RS485 link
Figure 41 Setup of a serial meter in Hardware selection
All available parameters will automatically be retrieved.
For Instromet Qsonic meters a choice of “Instromet protocol” and modbus protocol is available.
For the first select “Instromet ultrasonic” in the serial section as follows and match the other
settings:
Figure 42 Setup of an Instromet ultrasonic meter in Hardware selection
For Elster turbine meters, there is the option to use an encoder.