Rockwell Automation 1771ACN/B_1771ACNR/B,D17716.5.123 U.MNL CONTROLNET ADAPTER - Manual (Page 19)

Installing Your ControlNet Adapter Module 2–5
Publication 1771-6.5.123 – May 1996
You must set the I/O chassis backplane switches and power-supply
configuration plug.
Backplane Switch Assembly
This switch assembly is located on the backplane of the I/O chassis.
You use it to select:
•
the last state of all outputs
•
the processor restart lockout feature
•
1/2-, 1- or 2-slot addressing
Figure 2.3
I/O Chassis Backplane Switch Assembly Settings for ControlNet
Adapter Module in PLC-5/20C and PLC-5/40C Processor Systems
Processor Restart Lockout (PRL) –
ON Processor can restart the I/O chassis
after a communication fault. Set this
switch to ON if you plan to use I/O rack
auto-configuration.
OFF The I/O chassis must be restarted at
the chassis. Last State Switch -
ON Outputs of this chassis remain in last state when a
communication fault is detected by the adapter.
OFF Outputs of this I/O chassis are deenergized when a
communication fault is detected by this adapter
Always OFF
10802-I
O O
1
2
345
6
7
8
N F F
OFF ON You select 1/2-slot addressing
ON OFF You select 1-slot addressing
OFF OFF You select 2-slot addressing
ON ON Not allowed
Addressing Switches
5 6
Always OFF
ATTENTION: If switch 1 is set to the ON position, outputs
connected to this chassis remain in their last state when
a fault occurs and machine motion may continue after
fault detection. We recommend that you set switch 1 to
the OFF position to deenergize outputs wired to this
chassis when a fault is detected.
Setting the I/O Chassis
Switches