General command structure – ProSoft Technology 5204-DFNT-PDPMV1 User Manual
Page 71
DFNT ♦ ProLinx Gateway
Reference
EtherNet/IP Explicit Messaging Client/Server
Protocol Manual
ProSoft Technology, Inc.
Page 71 of 124
July 24, 2013
5.2
General Command Structure
DF1 Master Port Command
Structure (File for each Master
Port)
Description
Communicati
on Module
Information
Enable/Type Word
0=Disabled, 1=Continuous, 2=Conditional and 999=Poll. The
conditional type only applies to the write functions.
Virtual Database Address
This parameter defines the virtual database register to be
associated with the command.
Poll Interval
Minimum time in tenths of a second to wait before polling with this
command.
Count
Number of data values or registers to be considered by the
function.
Swap Type Code
Swap type code for command: 0=None, 1=Swap words, 2=Swap
words & bytes and 3=swap bytes in each word.
Device
Information
Node Address
Node address of unit to be reached on the data highway.
Function Code
This parameter defines the module function code to be
associated with the command. Each function code requires a set
of parameters to construct the DF1 message.
Parameters
Up to four parameter fields can follow the function code field to
define the element or data register to be considered by the
function.
Note that the Node Address field in the serial implementation has been expanded
to two fields: IP Address and Slot Number in the DFNT Ethernet implementation.
This is required for network support. The IP Address specifies the IP address of
the device to reach on the network. The Slot Number has specific meaning
determined by the processor. For ControlLogix processors, the Slot Number is
the location in the ControlLogix rack of the processor. For a four-slot rack, this
parameter would have a valid range of 0 to 3. For the PLC5 and SLC family of
processors, the Slot Number parameter is always set to -1. These processors do
not have a slot number in the path field as the Ethernet interface is resident on
the processor.
The following tables define the parameters required for each function.