HES
User Manual
HART to Ethernet Gateway System
226-710-00A
September 2018
www.miinet.com
[65]
Moore Industries-International, Inc.
Section 5 - MODBUS Register Definitions
The HES supports up to four concurrent MODBUS/ TCP connections. The diagnostic data
collected by the HES from connected devices are transmitted through MODBUS/TCP to control
systems, historians, etc. for predictive analytics that permits scheduled preventative device
maintenance, greatly reducing unplanned or emergency process interruptions or shutdowns.
Due to the number of HES channels and devices per channel, there can be a large number of
MODBUS registers. Great consideration was given to the optimizing of polling requests made
by MODBUS/TCP hosts over Ethernet networks in order to protect bandwidth. Hence, the HES
allows the following MODBUS memory map to be laid out by variable or device type and
optionally compressed. Additionally, the user can decide what value the MODBUS register
should post when there is lost communication with connected HART devices. It is
recommended that the user familiarize themselves with the following MODBUS register tables
and most used register ranges.
HES MODBUS Register Definitions
The following tables define the MODBUS input and holding register assignments. These tables
are based on one based register assignments. If your MODBUS host requires programming
using zero based MODBUS addresses, then deduct 1 from the listed (or computed) one based
register value. Please refer to your MODBUS host documentation to determine if it should be
programmed using address or register values.
Table 5.1. MODBUS Register Overview
Register Range
Name
Description
Ref. Table
1-8192
HART Field
Device Data
HART data collected for all
field devices
Table 5.2 and 5.3
9001-9128
HES HART Data
Table 5.4
9201-9500
HES Device
Variables
Table 5.5
9501-9828
HES Status
Registers
Table 5.6
9901-9999
HES System
Information
Information about the system
including version, model etc.
Table 5.7
HART field device data is assigned to registers 1-8192 depending on the mapping and
compression options. HES data is always assigned to fixed registers 9001 through 9999.
