Section 7 Modbus Configuration; Overview; Modbus Rtu - Teledyne SyriXus 65x Installation And Operation Manual

SyriXus Series Pumps Installation and Operation Guide

Section 7 Modbus Configuration

7.1 Overview

7.1.1 Modbus RTU

Figure 7-1 RS-485 Connection
EAR99 Technology Subject to Restrictions Contained on the Cover Page
Modbus is a simple command/response mechanism to 'read from' and
'write to' specific memory locations called 'registers'. A register is a
holding place for a piece of digital information within the equipment.
For more information on Modbus, please refer to the following docu-
ments which can be found on the
Application Protocol Vol. 1 and Modbus Over Serial Line Vol. 1 and
Modbus Messaging on TCP/IP.
The SyriXus series syringe pump controller supports the Modbus RTU
and Modbus TCP/IP protocols.
The Modbus RTU protocol implementation uses a 2-wire RS-485 con-
nection. The RS-485 connections are located on the DB25 connector
labeled RS-232/RS-485. Teledyne ISCO recommends connecting the
ground reference wire as shown in Figure 7-1. The matching con-
nection is a D-Subminiature 25-pin standard plug, such as a TE Con-
nectivity AMP connector (P/N 747912-2) from an electronic parts
supplier.
Connecting devices to energized circuits may cause personal
injury or property damage. Power must be removed from the
pump before connecting external devices.
www.modbus.org
WARNING
website: Modbus
7-1