HGP Kit Manual
5.0 PQconnect
38
Modbus RTU
Introduction
The PQconnect Modbus RTU network communication interface transmits and receives command
and status data from the PQconnect Modbus master over a RS-485 serial link. Modbus RTU is a
simple serial communications protocol originally developed by Modicon for use with
Programmable Logic Controllers (PLCs) in control of industrial devices. Modbus RTU is
commonly supported by most PLCs and is an open, royalty-free communications standard.
Wiring and Configuration
The PQconnect implements a Modbus RTU Master/Slave device, which supports two-wire RS-
485 signal levels. The PQconnect communication port used for the Modbus RTU interface is
connected directly to the PCB. The communication port is located on the side of the PQconnect
board.
Figure 24 : PQconnect Modbus RTU Connection
Modbus RTU Display Connections
The hardware pinout for the J5 communication header and default settings is shown below.
5
4
3
2
1
Modbus RTU
Connection
Содержание HGP HarmonicGuard Series
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