Spectrum Controls 1769sc-HART Modules - Manual (Page 70)

Compact IO™ Isolated HART Analog Input Module
User's Manual 0300215-03 Rev. A
7-2
Figure 7-1
!
Attention
HART throughput time can be improved by disabling HART
communication on unused channels or channels that include non-HART
devices.
Section 7.2
HART Packet
Data
7.2.1 How the Module Connects to a Field Device
The HART input module behaves as a HART master in which case the field device is
considered the slave. In other words, the master must initiate the communication with the
field device and the device simply replies with an appropriate response. Any given
channel may have a master, a secondary master (hand held configuration tool), and a
slave connected simultaneously. Please see Figure below.