ProSoft Technology MVI69-HART - Manual (Page 96)

Reference MVI69-HART ♦ CompactLogix Platform
User Manual HART Multi-drop Master Communication Module
Page 96 of 169 ProSoft Technology, Inc.
March 29, 2012
5.2.6 Master Driver Mode
The master driver supported on each application port of the module emulates a
HART master device. Configuration of each port is independent and should be
connected to different HART networks. Up to 15 devices can be connected to
each channel. Control of the slave devices by the master port is using a user-
constructed command list auto-polling, if enabled. Data for these commands is
sourced from the module’s database. Data read from the slave devices is placed
in the module’s database. The following diagram shows the operation of the
master driver:
1 The master driver is configured as specified by the HART69.CFG file
2 The master will construct control commands using the data in the database
3 The master will send these commands and read requests out on the network
4 Response messages generated by controlled devices on the network are
received by the master driver
5 Read data received by the master is passed to the module’s database and
passed to the processor
6 Additionally, status data for the module is passed to the processor