Pv Communication; Modbus Master, Serial 1; Modbus Protocol And Write Type - Deif ASC-4 Commissioning Manuallines

13.2 PV communication

13.2.1 Modbus master, Serial 1

Using the communication interface requires the use of Modbus master for the Sunspec-supported inverters or inverters with
proprietary protocols.
Terminal Function
29 Modbus communication
31 Modbus communication
Note that the Modbus line should be properly terminated. Long lines typically with 120 Ohm in each. For short lines, it is often seen
that the termination can be removed, but it also depends on the inverter type.
Note that the Modbus ID in the inverter can be set to the same as in the ASC. The baud rate has to be the same in the ASC and the
inverter.

13.2.2 Modbus protocol and write type

The Modbus transmit specifics is set in menu 7560:
COMMISSIONING GUIDELINES 4189341077D EN
Associated menus
7561, PV Comm type (for example Sunspec)
7570, action at PV Communication error (Modbus master)
A
7510 Ext comm ID and Baud rate
7520, action at communication error (Modbus slave)
B
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