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Emerson Process Management GmbH & Co. OHG 9-1
X-STREAM X2
Instruction Manual
HASX2E-IM-HS
02/2012
9
Modbus Commands
Chapter 9
Modbus Functions
This chapter lists all Modbus functions
and registers supported by X-STREAM gas
analyzers.
Refer to the www.Modbus-IDA.org website
for detailled documentation about program-
ming the interface. At date of creation of this
instruc-tion manual the following documents
were used:
• MODBUS Protocol Specication:
Modbus_Application_Protocol_V1_1a.
pdf
• MODBUS Serial Line Implementation Guide:
Modbus_over_serial_line_V1.pdf.
9.1 Abstract
For a list of
supported functions 9.2, page 9-2
supported parameters and registers,
ordered by parameter tag name 9.3, page 9-2
ordered by register number 9.4, page 9-22
Before using Modbus TCP/IP take care to
congure the communication properly:
6.2.3.6, page 6-45.
For Modbus TCP/IP the analyzer is factory
congured to support DHCP servers: The mo-
ment, the powered instrument is connected
9.1.1 Modbus TCP/IP
Download the conguration utility software for the installed XPort AR from:
http://www.lantronix.com/support/downloads.html
to a DHCP server via ethernet, it will receive
a valid IP address and become visible in the
network.
If a DHCP server is not available, special
software is downloadable to congure the
ethernet port.