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Connections and Wiring
21
NI-2000, NI-3000, NI-4000 Hardware Reference Guide
Connections and Wiring
Setting the Configuration DIP Switch (for the Program Port)
Prior to installing the Controller, use the Configuration DIP switch to set the baud rate used by the
Program port for communication. The Configuration DIP switch is located on the front of the Integrated
Controllers.
Baud Rate Settings
Before programming the on-board Master, make sure the baud rate you set matches the communication
parameters set on both your PC’s COM port and those set through your NetLinx Studio v 2.4.
By default, the baud rate is set to
38,400
(bps).
Program Run Disable (PRD) Mode
You can also use the Program port’s Configuration DIP switch to set the on-board Master to Program
Run Disable (
PRD
) mode according to the settings listed in the table below.
The
PRD
mode prevents the NetLinx program stored in the on-board Master from running when you
power up the Integrated Controller. This mode should only be used when you suspect the resident
NetLinx program is causing inadvertent communication and/or control problems.
If necessary, place the on-board Master in PRD mode and use the NetLinx Studio v 2.4 program to
resolve the communication and/or control problems with the resident NetLinx program. Then download
the new NetLinx program and try again.
Baud Rate Settings on the Configuration DIP Switch
Baud Rate
Position 5 Position 6 Position 7
Position 8
9600 bps
OFF
ON
OFF
ON
38,400 bps (
default
)
OFF
ON
ON
ON
57,600 bps
ON
OFF
OFF
OFF
115,200 bps
ON
ON
ON
ON
Note the orientation of the Configuration DIP Switch and the ON position label.
DIP switches 2,3, and 4 must remain in the OFF position at all times.
PRD Mode Settings
PRD Mode
Position 1
Normal mode (default)
OFF
PRD Mode
ON