
PLX51-HART-4I / PLX51-HART-4O
♦
HART Input/Output
Operation
Multidrop Field Devices
User Manual
ProSoft Technology, Inc.
Page 69 of 127
4.4 Modbus TCP/IP Operation
The Modbus TCP/IP operation is enabled when the configuration protocol is set to
Modbus TCP/IP. The module will then operate as a Modbus TCP/IP Server
supporting the following Modbus registers for the main device.
Table 4.14 - Modbus Register Map
Register Type:
Holding Registers
Parameter
Byte
Length
Date
Type
Register
General
Channel
0
Channel
1
Channel
2
Channel
3
Module Status
Bit 0 – Configuration Valid
Bit 1 – Channel 0 Enabled
Bit 2 – Channel 1 Enabled
Bit 3 – Channel 2 Enabled
Bit 4 – Channel 3 Enabled
Bit 5 – Channel 0 HART
Enabled
Bit 6 – Channel 1 HART
Enabled
Bit 7 – Channel 2 HART
Enabled
Bit 8 – Channel 3 HART
Enabled
2
INT
0
-
-
-
-
Channel 0 Live List
When using Multidrop
functionality this will indicate
which of the configured
devices are online. Note that
each bit represents the
configured Multidrop Device
Index (see the Multidrop
configuration in the Advanced
Mapping section).
Example: If bit 3 is set, then
Multidrop device at MD 3 is
online (for the specific
channel).
2
INT
2
-
-
-
-
Channel 1 Live List
When using Multidrop
functionality this will indicate
which of the configured
devices are online. Note that
each bit represents the
configured Multidrop Device
Index (see the Multidrop
configuration in the Advanced
Mapping section).
Example: If bit 3 is set, then
Multidrop device at MD 3 is
online (for the specific
channel).
2
INT
4
-
-
-
-