HART Multiplexer Commands

Overview

The HART multiplexer within the HART analog I/O modules support the following HART multiplexer commands.

Universal Commands

Command	Description
1	Read primary variable
2	Read loop current and percentage of range
3	Read dynamic variables and loop current
6	Write polling address
7	Read loop configuration
8	Read dynamic variable classifications
9	Read device variables with status
11	Read unique identifier associated with tag
12	Read message
13	Read tag, descriptor, and date
14	Read primary variable transducer information
15	Read device information
16	Read final assembly number
17	Write message
18	Write tag, descriptor, and date
19	Write final assembly number
20	Read long tag
21	Read unique identifier associated with long tag
22	Write long tag
38	Reset configuration changed flag
48	Read additional device status

Common Practice Commands

Command	Description
42	Perform device reset
59	Write number of response preambles
106	Flush delayed response

ARCOM Multiplexer Common Practice Commands

Command	Description
128	Read parameters
129	Read loop status
130	Read instrument list from index
131	Read instrument static data
132	Write instrument static data
133	Remove instrument from instrument list
134	Read scan list from index
135	Read instrument dynamic data
136	Read instrument scan status
137	Write instrument scan status
138	Read instrument cumulative responses
139	Reset instrument cumulative responses
140	Read instrument tries and failures
141	Reset instrument tries and failures
142	Read counts of host communications
143	Reset counts of host communications
144	Read retry limits
145	Write retry limits
146	Read scan command
147	Write scan command
148	Read scan status
149	Write scan status
150	Read gender
151	Write gender
152	Read loop search type
153	Write loop search type
154	Rebuild loops
155	Copy command and reply (pass-through)