
PLX51-HART-4I / PLX51-HART-4O
♦
HART Input/Output
Operation
Multidrop Field Devices
User Manual
ProSoft Technology, Inc.
Page 63 of 127
4.1.6 HART Process Variable CIP Parameters
The module supports additional CIP attributes which will allow the EtherNet/IP device
to read all 4 process variables (PV, SV, TV, and FV) from the “main” HART device as
well as each multidrop HART device for each respective HART channel.
Table 4.11 – HART Process Variable CIP Parameters
Parameter
Value / Description
Message Type
CIP Generic
Service Type
Get Single Attribute
Service Code
0E Hex (Get Single Attribute)
Class
40F Hex
Instance
Channel value + 1
1 for Channel 0
2 for Channel 1
3 for Channel 2
4 for Channel 3
Attribute
25 – Main HART device
35 – Multidrop Device Index 0
45 – Multidrop Device Index 1
55 – Multidrop Device Index 2
65 – Multidrop Device Index 3
75 – Multidrop Device Index 4
85 – Multidrop Device Index 5
95 – Multidrop Device Index 6
Source Element
None
Source Length
8
Destination Element
REAL[4]
REAL[0] – HART Device PV.
REAL[1] – HART Device SV.
REAL[2] – HART Device TV.
REAL[3] – HART Device FV.