GE AquaTrans AT600 - Hart; Device Identification; Commands

AquaTrans™ AT600 User’s Manual 105
Chapter 6. Communication
6.2 HART
6.2.1 Device Identification
The AT600 flow meter supports the HART communication protocol, for which the manufacturer ID is 0x9D
(157 Dec) and the Device type Code is 0x9D73 (127 Dec).
6.2.2 Commands
6.2.2.1 Universal Commands
2302 8962 RO Dn +- Peak RO INT32
2304 8964 RO dynamic threshold on UP
channel
RO INT32
2306 8966 RO dynamic threshold on DOWN
channel
RO INT32
Table 8: Universal Commands for HART
Command Function Description
0 Read Unique Identifier Returns identity information about the meter including: the Device Type,
revision levels, and Device ID.
1 Read Primary Variable Returns the Primary Variable value along with its Unit Code
2Read Loop Current And
Percent Of Range
Reads the Loop Current and its associated Percent of Range.
3 Read Dynamic Variables and
Loop Current
Reads the Loop Current and up to four predefined Dynamic Variables. The
Dynamic Variables and associated units are defined via Commands 51
and 53.
6 Write Polling Address Writes the polling address and the loop current mode to the field device.
7 Read Loop Configuration Read polling address and the loop current mode.
8 Read Dynamic Variable
Classification
Reads the Classification associated with the Dynamic variable.
9 Read Device Variables with
Status
Request the value and status of up to eight device Device or Dynamic
Variables.
11 Read Unique Identifier
Associated With Tag
If the specified tag matches that of the meter, it responds with the
Command 0 response.
12 Read Message Reads the Message contained within the meter.
13 Read Tag, Descriptor, Date Reads the Tag, Descriptor, and Date contained within the meter.
14 Read Primary Variable
Transducer Information
Reads the Transducer (meter) Serial Number, Limits/Minimum Span Units
Code, Upper Transducer Limit, Lower Transducer Limit, and Minimum
Span for the Primary Variable transducer.
15 Read Device Information Reads the alarm selection code, transfer function code, range values units
code upper range value, Primary Variable lower range value, damping
value, write protect code, and private label distributor code.
16 Read Final Assembly
Number
Reads the Final Assembly Number associated with the meter.
17 Write Message Write the Message into the meter.
18 Write Tag, Descriptor, Date Write the Tag, Descriptor, and Date Code into the meter.
Table 7: MODBUS Register Map (cont.)
Register
(in Hex)
Register (in
Decimal)
Access Level Description RO/RW Format