Rockwell Automation 1794-ADN/C, 1794-ADNK/C FLEX I/O DeviceNet Adapter Module Installation Instructions - Manual (Page 4)

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Publication 1794-IN099C-EN-P - May 2010
3. Connect +V DC power to the left side of the lower connector,
terminal E.
4. Connect -V common to the left side of the upper connector,
terminal D.
5. Connections G and F are used to pass +V DC power (G) and -V
common (F) to the next module in the series (if required).
NOTE: Cable colors are shown on the wiring label on the front of the
adapter module.
Set the Node Address
Set the node address using the 2-position thumbwheel switch. Valid
settings range from 00 to 63. Press either the + or - buttons to change the
number.
NOTE: The baud rate for the adapter is set by way of “baud detection” at
power-up.
Status Indicators
Enhancements to Firmware 3.001
Firmware revision 3.001 provides the following functionality to the
1794-ADN DeviceNet adapter.
 When you cycle power to the adapter in out-of-the-box mode (no rack configuration
stored in the adapter's memory), and there is a 32-point input or output module
(1794-IB32 or 1794-OB32) on the rail, the adapter will detect the 32-point module as a
2-word module and allocate I/O space appropriately for the network connection.
 With firmware revision 3.001, when you cycle power to the adapter in out-of-the-box
mode, if a 1794-IB32 module is detected, it will allocate 2 input words, and no output
words, for the network connection. Similarly for the 1794-OB32, 2 output words, and no
input words, are allocated for the network connection.
Corrected Anomalies
Firmware revision 3.001 corrects these anomalies:
 Input data issue in firmware revision 2.004
 In firmware revision 2.003 or earlier, the 32-point I/O modules would have only one input
word and one output word allocated in the default out-of-the-box mode of operation for
each 32-point module.
If You Replace Firmware Revision 2.003 or Earlier Adapter With 1794-ADN
Series C
Take the following precautions when replacing a firmware revision 2.003
or earlier adapter with a firmware revision 3.001 or later adapter when the
FLEX rail contains any 32-point modules.
 If out-of-the-box mode was used with the original adapter, the 32-point modules were
configured to act as if they were 16-point modules. After changing to the firmware
revision 3.001 adapter, it will not make a connection with the scanner because there will
be a mismatch in the I/O sizes. The scanner will report an error 77, indicating the I/O size
mismatch between the scanner and adapter.
To resolve this I/O size mismatch, two changes must be made:
– The scanner's scan list must be updated to reflect the new adapter's
I/O size.
In the case of each 1794-IB32 module, an extra input word must
be added and the output word deleted. Similarly with each
1794-OB32 module, an extra output word must be added and the
input word deleted.
– After the scanner's scan list has been updated to reflect the new I/O
sizes, the controller's I/O image will have to be adjusted, along
with the controller's ladder program, for any I/O that has shifted
due to I/O image changes.
 If out-of-the-box mode was not used, and an RSNetWorx software-based configuration
was downloaded to the original adapter, there are two cases to consider:
– The original adapter's configuration is the same as the v3.001
adapter's out-of-the-box configuration.
In this case, the scanner will automatically make the I/O
connection with the firmware revision 3.001 adapter. Once
network setup is complete, downloading and saving the original
configuration to the adapter is recommended.
– The original adapter's configuration does not match the firmware
revision 3.001 adapter's out-of-the-box configuration.
In this case, the scanner will report an error 77, indicating an I/O
size mismatch.
To correct this issue, download the existing configuration to the
adapter.
Specifications
ATTENTION
Power wiring must be less than 3 meters (9.8 ft) in length.
Status Indicators
Indicator State Description
Power On Power applied to module
Off No power applied to module. Check power wiring to
adapter module.
ModNet
Status OFF No power, or no network access
Flashing
green/off Online, but not connected
Solid green Online, link okay, connected
Flashing red Recoverable fault
Solid red Critical adapter failure
I/O Status Off No power, or outputs off
Flashing red Recoverable fault - outputs in fault
Flashing
green/off Idle program mode - outputs in idle
Solid green Device operational - outputs live - run
Solid red Critical adapter fault - unrecoverable
Node
address
switches
44981
I/O status indicator
Mod/Net status
indicator
Power on indicator
44982
ATTENTION
The adapter will not accept any downloads that could change its
configuration while there is an active I/O connection between a
scanner and the adapter. It will be necessary to either remove the
scanner from the network or disable the scanlist entry in the scanner
to the adapter, using RSNetWorx software, before configuration
downloads can be done successfully to the adapter
General
Attribute Value
I/O capacity 8 modules
Power supply The 24V DC power supply must be capable of providing a
turn-on inrush surge current of 14 A for 5 ms for each adapter
connected to this supply.