Allen-Bradley Compact I/O 1769-ADN DeviceNet, User Manual

Page: 22 / 204

Publication 1769-UM001B-EN-P - October 2002
1-8 Installing Your DeviceNet Adapter Module
Setting the Network
Address Switches
Set the network node address with the two rotary switches on the
front of the module. Use a small, slotted screwdriver to set the
switches. The switch labeled MSD (Most Significant Digit) sets the 10s
digit while the switch labeled LSD (Least Significant Digit) sets the 1s
digit.
Valid network node addresses are 00 through 63. Switch settings from
00 to 63 select network addresses 00 to 63. Switch settings from 64 to
99 instruct the adapter to use the software programmed value for the
node network address. (Address 95 is reserved and should not be
used for normal operation.)
The software programmed value is set via RSNetworx
TM
for DeviceNet
and stored in non-volatile memory on the 1769-ADN. The initial,
factory-preset setting of the software programmed value is 63.
NOTE: The baud rate for the adapter is set by way of the module’s
automatic “auto baud” function at power-up.
TIP
DeviceNet cable colors are shown on the wiring
label on the front of the adapter.
Note: A 10-pin linear plug (i.e., 1787-PLUG10R) will
not fit while a 1799-DNETCON or -DNETSCON will
fit.
IMPORTANT
If the 1769-ADN is the last device connected to the
DeviceNet network trunkline, be sure to add or
move the termination resistor (Allen-Bradley part
number 1485A-C2 or a 120
Ω
5% or > ¼W resistor)
across the Blue (CAN Low) and White (CAN High)
wires. We recommend 121
Ω
¼W 1% metal film.
Comm Adapter
MS
IO
NS
DIAG
Network
Address
Switches
42127
Address
Switches