ProSoft Technology MVI69-HART - Manual (Page 84)

Reference MVI69-HART ♦ CompactLogix Platform
User Manual HART Multi-drop Master Communication Module
Page 84 of 169 ProSoft Technology, Inc.
March 29, 2012
5.1.3 Functional Specifications
The MVI69-HART module supports the HART Multi-drop implementation of the
protocol. Following are some general specifications for the module:

Built accordance to the HART Bell 202 Frequency Shift Keying (FSK)
standard to superimpose digital signals at a low level on top of the 4 to 20 mA
o
Two independent HART master ports that are completely user-
configurable
o
Supports up to 15 devices per port
o
Point-to-point (slave address 0) or multi-drop (slave address 1 to 15)
modes supported

Supports 99 universal and common practice commands per port to control
and monitor devices with integer, IEEE754 floating-point and packed ASCII
character string data blocks

Burst mode can be used for faster update of data from a single slave

Supports an auto polling feature that will automatically collect data from each
HART instrument on the channel and store the data in the module database

Communication ports can be configured as a secondary Master (that is,
handheld configuration device)
Protocol Supported: HART protocol uses the Bell 202 standard frequency shift-
keying (FSK) digital signal to communicate at 1200 baud, superimposed at a low
level on the 4 to 20 mA analog measurement signal. The MVI69-HART module
supports version 5 of the HART protocol.
Supported Function Codes: HART Universal Commands Set supported are 00
to 03, 06 to 09, and 11 to 22. HART Common Practice Commands Set supported
are 33 to 83 and 105 to 110.
HART Network Communications: Supports two Master channels. Each
channel on the module is configured independently to emulate a HART Master.
Burst mode can be used for faster update of data from a slave device.
Command polling is also user-configurable, including disabled, continuous, on
change of data (write only), and dynamically user or automatic enabled.
Status: Error codes returned by the HART protocol available on an individual
command basis. In addition, a slave status list is maintained per active channel.