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be set to Mains operation. Pump Groups (parameter 1-1-2-6) has to be set to
Pump-group
and jockey-pump control
. For switching between jockey pump and base load pump group
Over-/Undersupply (parameter 2-4-3-1) can be selected and the Time of Over-/Undersupply
(parameter 2-4-3-2) can be set. For the jockey pump a separate Minimum Runtime Jockey
Pump (parameter 2-3-5) can be set.
8.11 Field bus
Field bus
A field bus Modbus RTU module with galvanically isolated RS-485 interface is integrated.
Modbus RTU communication has to be activated (parameter 1-4-1). The corresponding
Slave Address (parameter 1-4-2), Baud Rate (parameter 1-4-3) and Parity (parameter 1-4-4)
have to be set. Diverse parameters and the status of all messages can be read. Some
parameters, e.g. the setpoint can also be written. [
