8240 Series MODBUS Communications Option Supplement

This document is a supplement to the 8240 Series Analyzers user guide, detailing the installation, setup, programming, and operation of the MODBUS communications option. It covers electrical connections, MODBUS protocol functions (such as Read Coil Status, Read Holding Register, and Preset Multiple Registers), and provides specific coil and register mappings for single-stream and multi-stream Silica and Phosphate monitors (Models 8241/185, 8241/195, 8242/185, 8242/195).