Connection Of The Modbus Adapter - ABB PQFS Installation, Operation And Maintenance Instructions

While using the PQ-Link software, the computer can be connected either through the
Ethernet port using standard cable (RJ45) or through the USB port using standard USB
cable.
Figure 49: Ethernet cable & USB cable for PC-filter interconnection
For communication over Modbus TCP, the computer can be connected through the
Ethernet port using standard cable (RJ45).
For communication over Modbus RTU, we need a RS485 Modbus adapter (as shown in
Figure 50). This adapter has to be connected to the rear side of the PQF-Manager. This
is done by inserting the adapter plug firmly in the dedicated socket. Figure 50 shows the
location at the rear of the PQF-Manager where the plug has to be inserted. The user can
use custom software where the standard Modbus RTU protocol is implemented or any
other standard software (OPC server, SCADA ...).
Figure 50: Location at rear of PQF-Manager where the serial communication
cable has to be inserted
More information on the PQ-Link software or Modbus communication can be found in
the 'PQ-Link installation and user's guide' and 2GCS214017A0070_PQF-Manager
communication with Modbus RTU, Modbus TCP and PQ-Link protocols.

6.13.2 Connection of the Modbus adapter

For the connection setup of the Modbus adapter, please refer to the document
"2GCS212013A0050-RS-485 Installation and Start-up guide".
Manual Power Quality Filter PQFS  Electrical design and installation 71