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ControlNet-to-DeviceNet Linking Device
1788-5.2B - October 1999
Input Structure
The controller receives input I/O by reading input data from an input structure in
the 1788-CN2DN module. The scanner module receives input data from
DeviceNet modules and delivers a copy of these values to the controller. The
input structure consists of one 32-bit status register and an array of 1 to 124
32-bit words for input data. The 32-bit status register reflects the current state of
several key module-level operational parameters.
The input structure consists of these data regions.
Module Status Register Bit Definitions
Input Structure Element
Data Type
module status register
1 x 32-bit register
input_data
1 to 124 32-bit data array
Bit
Name
Description
0
RUN
1 = in run mode
0 = in idle mode
1
FAULT
1 = network is faulted
2
Disable Network
1 = network is disabled
3
Device Failure
1 = device failure exists
4
Autoverify Failure
1 = failure is verified automatically
5
Comm Failure
1 = communication failure exists
6
Dup Node Fail
1 = failure due to duplicate node address
7
Dnet Power Detect
1 = DeviceNet power failure
8 - 31
Reserved
unused
Input Data [124]