Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual - Manual (Page 73)

Publication 1797-6.5.3 - March 2006
Input, Output and Configuration Files for the Analog I/O Modules on the ControlNet Network 4-5
I/O Structure Output data is received by the adapter in the order of the installed I/O
modules. The output data for slot 0 is received first, followed by the output
data for slot 1, and so on up to slot 7.
The first word of input data sent by the adapter is the Adapter status word.
This is followed by the input data from each slot, in the order of the installed
I/O modules. The input data from slot 0 is first after the status word, followed
by input data from slot 1, and so on up to slot 7.
Adapter Status Word
The status word consists of:
• I/O module fault bits – 1 status bit for each slot
Additionally, in the case of a PLC-5 controller, it adds:
• Node address changed – 1 bit (created by PLC-5 controller)
• I/O status – 1 bit (created by PLC-5 controller)
ControlNet Adapter
Read Data
Adapter Status
Slot 0 Input Data
Slot 1 Input Data
Slot 7 Input Data
Slot 0 Output Data
Slot 1 Output Data
Slot 7 Input Data
Write
Read I/O
Module
Slot 0
I/O
Module
Slot 1
I/O
Module
Slot 7
Network READ
Network WRITE
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