Hart command 3 – Rockwell Automation 1770,D17706.5.21 SMART TRANSMITTER TOOLKI User Manual
Page 41
HART Command Data Table Layouts
Appendix A
A-6
Use this command to read the primary variable current and up to four
predefined dynamic variables from the HART field device.
The primary variable current always matches the analog output current
of the device including alarm conditions and set values.
The secondary, tertiary, and 4th variables are defined by each device
type. For example, the secondary variable is the sensor temperature for
the 3051 pressure transmitter.
Standard Inputs
Integer
Word 0
I/O Rack Number of 1770ĆHT1
Word 1
I/O Group Number of 1770ĆHT1
Word 2
Channel Number of HART field device
Word 3
Polling Address of HART field device
Word 4
Smart Transmitter Interface Command Number 16 (decimal)
Word 5
HART Command Number 3
CommandĆspecific Inputs
Integer
Words 6 Ć 8
HART Address of HART field device
Data Table Report PLC-5/25 Addr 31 Data Table File N10:0
Address 0 1 2 3 4 5 6 7 8 9
N10:0 4 6 3 0 16 3 9858 269 12807 0
N10:10 0 0 0 0 0 0 0 0 0 0
N10:20 0 0 0 0 0 0 0 0 0 0
N10:30 0 0 0 0 0 0 0 0 0 0
N10:40 0 0 0 0 0 0 0 0 0 0
N10:50 0 0 0 0 0 0 0 0 0 0
These six integer words are the
standard inputs that are required for
each HART command (see page 3Ć3).
This is the HART address that is returned
from HART Command 0 (see page AĆ3).
HART Command 3
Read Dynamic Variables & Primary
Variable Current