Publication 1794-UM063A-EN-P - March 2006
Configurable FLEX I/O Analog Module Features 2-21
HART Read Back Threshold
This bit delivers the percentage value, in steps of 1%, of the threshold for
forcing the HART read back indication. The maximum input signal deviation
for HART analog modules is 31%.
If there is no HART transmitter on the loop or if the loop is not in the
transmitter list, the function is switched off internally in the I/O module.
The values are:
• 0 = disable indicator (default)
• 1 to 4 = not supported from the I/O module (set to 5 internally)
• 5 to 31 = percentage threshold data (5 to 31%)
Chapter Summary
In this chapter, we told you about the FLEX I/O system and the analog I/O
modules, and how they communicate with programmable controllers. Move to
Chapter 3 to learn how to install your FLEX I/O analog module.
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