Spectrum Controls 1756sc-OF8H Series A - Manual (Page 81)

Chapter 7: HART Channel Configuration, Data, and Status 67
Enabling and Using HART on the Enabling and Using HART on the Enabling and Using HART on the Enabling and Using HART on the Enabling and Using HART on the
1756sc-IF8H and OF8H 1756sc-IF8H and OF8H 1756sc-IF8H and OF8H 1756sc-IF8H and OF8H 1756sc-IF8H and OF8H
This chapter outlines the detailed settings and configuration related to
HART communication for the 1756sc-IF8H and 1756sc-OF8H modules.
These settings determine how the modules acquire HART data.
The chapter is broken down into the following sections:
• Configuring the modules for HART
• How the modules send and receive HART data
• HART protocol overview
Configuring the Configuring the Configuring the Configuring the Configuring the
Modules for Modules for Modules for Modules for Modules for
H A R T H A R T H A R T H A R T H A R T Conf Conf Conf Conf Configuring the IF8H Module f iguring the IF8H Module f iguring the IF8H Module f iguring the IF8H Module f iguring the IF8H Module for (Har or (Har or (Har or (Har or (Har ttttt
A c q u i s i t i o n / C o m m u n i c a t i o n ) A c q u i s i t i o n / C o m m u n i c a t i o n ) A c q u i s i t i o n / C o m m u n i c a t i o n ) A c q u i s i t i o n / C o m m u n i c a t i o n ) A c q u i s i t i o n / C o m m u n i c a t i o n )
• In order for HART to be active on any given channel, the channel
configuration must contain the following basic settings:
• Bit 7 (Enable HART), in the If8h0Configuration.ChXConfigBits tag,
needs to be set. See chapter 5 for more details.
• An appropriate ADC filter range must be selected.
!
Attention: The 1000Hz ADC filter setting is not Attention: The 1000Hz ADC filter setting is not Attention: The 1000Hz ADC filter setting is not Attention: The 1000Hz ADC filter setting is not Attention: The 1000Hz ADC filter setting is not
allowed when HART is enabled. allowed when HART is enabled. allowed when HART is enabled. allowed when HART is enabled. allowed when HART is enabled.
• The If8h0Configuration.ChXInputRange tag must be set to 4 for a 4 to
mA current range.
!
Attention: Attention: Attention: Attention: Attention: HART throughput time can be HART throughput time can be HART throughput time can be HART throughput time can be HART throughput time can be
improved by disabling HART communication on improved by disabling HART communication on improved by disabling HART communication on improved by disabling HART communication on improved by disabling HART communication on unused unused unused unused unused
channels or channels that include non-HART devices. channels or channels that include non-HART devices. channels or channels that include non-HART devices. channels or channels that include non-HART devices. channels or channels that include non-HART devices.
Chapter 7