Rockwell Automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Modules - Manual (Page 13)

1 Publication 1794-UM065B-EN-E - September 2010
Chapter
1
About the FLEX I/O HART Analog Module
Overview This chapter describes the FLEX I/O Highway Addressable Remote
Transducer (HART) analog modules and what you must know and do before
you begin to use them.
Read this chapter to familiarize yourself with the HART analog modules.
What FLEX I/O Analog
Modules Do The FLEX I/O HART input and output modules must be used in a
ControlNet or EtherNet network.
The 1794-IF8IH module accepts up to 8 analog inputs. The inputs are isolated
and will accept current in either of the following two ranges: 4…20 mA or
0…20 mA. The default input range is 0…20 mA. The inputs have both fixed
hardware filters and selectable firmware digital filters.
Similarly, the 1794-OF8IH module provides as many as 8 analog outputs. The
outputs are isolated and will provide current in either of the following two
ranges: 4…20 mA or 0…20 mA. The default output range is 0…20 mA.
Each module offers:
• local microprocessor intelligence for advanced features.
• full functionality without switches or jumpers.
Topic Page
What FLEX I/O Analog Modules Do 1
Communicate with Programmable Controllers 2
Use Alarms on the Input Module 3
Use the HART Capabilities 6
HART Implementation Overview 6
Chapter Summary 6
IMPORTANT
To use all of the features of this module it must be used with the
1794-ACN(R)15 with version 5.1 firmware or later, or the 1794-AENT
with version 4.2 firmware or later.
For more information about using this module with 1794-ACN(R)15
with version 5.1 (or greater) firmware, see
1794-RN071 .