ProSoft Technology MVI69-HART - Manual (Page 32)

Module Configuration MVI69-HART ♦ CompactLogix Platform
User Manual HART Multi-drop Master Communication Module
Page 32 of 169 ProSoft Technology, Inc.
March 29, 2012
Auto-Poll Code
p2p, multidrop, or Not used
This parameter sets the auto-poll mode of the channel. If the parameter is set to
"p2p", the module will automatically poll device 0 in point-to-point mode. If the
parameter is set to "multidrop", the module will automatically poll multiple
devices. If the parameter is set to "Not used", the auto-polling option will be
disabled and only commands in the command list will be utilized for the channel.
In the auto-poll mode, the module will automatically execute HART commands 0,
3, 13, 14, and 15.
Auto-Poll DB Address
0 to 3700
This parameter sets the starting address for the data obtained by the auto-poll
feature. Each device on a channel requires 50 words in the database. The data
area selected must not overlap any portion of the database used by other
channels or the module.
Auto-Poll Swap Float
0 to 3
This parameter swaps the floating-point data values received by the auto-poll
feature.
Swap Code Description
0 None - No Change is made in the byte ordering (1234 = 1234)
1 Words - The words are swapped (1234=3412)
2 Words & Bytes - The words are swapped then the bytes in each word are
swapped (1234=4321)
3 Bytes - The bytes in each word are swapped (1234=2143)
Depending on the host processor using the data, the proper swap code must be
utilized to present the data in the correct format.
Max Device Count
1 to 15
This parameter sets the maximum number of slave devices to be utilized for the
auto-poll feature. In point-to-point mode, the parameter should be set to a value
of 1. In multi-drop mode, the parameter should be set from 1 to 15 to represent
the number of slave devices attached to the channel.
Error/Status Offset
-1 or 0 to 3935
This parameter defines the database location where the module status data will
be stored. If set to -1, data not placed in database.