Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual - Manual (Page 29)

Publication 1797-6.5.3 - March 2006
About the FLEX Ex HART Analog Modules 1-15
Selecting the Correct Path The Path is a string that specifies the direction the message follows to get to a
desired node. The MSG instruction requires a specific format for the string,
consisting of a number sequence with each number separated by a $ sign. The
message sequence is performed in sequential order from the perspective of the
controller.
If you are using a ControlLogix system, the numbers $01 and the $02 will
usually be in these sequence locations. The $03 may vary depending on the slot
location of your network module. The $05 will vary according to your target
address. If you need to bridge to other networks, then additional numbers will
be needed in the sequence. For more details on this method, search in the
Logix5000 Help.
Chapter Summary In this chapter, you learned about FLEX Ex analog I/O modules and HART
module capabilities. Move on to Chapter 2 to learn about configurable features
on your module.
EXAMPLE
A path of $01$03$02$05 is interpreted as:
$01 = Go out the backplane port of the 1756
controller
$03 = Go to the module in slot 3 of the 1756 chassis
(1)
$02 = Go out the front communications port of the
module
$05 = Go to node address 5
(1) Assume that a 1756-CNB is in slot 3.