Rice Lake Allen-Bradley Remote I/O - Manual (Page 8)

4 Remote I/O Installation and Programming Manual
2.2 DIP Switch Configuration
Two banks of DIP switches, SW1 and SW2, are used to configure the Remote I/O Interface for communication
with the indicator and the network. Figure 2-3 shows the switch assignments for SW1 and SW2.
SW2 SW1
Starting
Quarter
Rack Address
MSB LSB
Network Data Rate Reser
ved
Last Rack Rack Size Reser
ved
Link Address
Block T
ransfer
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
OPEN OPEN
Figure 2-3. SW1 and SW2 DIP Switch Assignments.
Starting Quarter
Switches SW1-1 and SW1-2 set the starting quarter
(or group number) used by the Remote I/O Interface.
Use Table 2-3 to select the correct switch settings.
Table 2-3. Starting Quarter
Starting
Quarter
Group
Number
SW1 Switch Settings
1 2
1st 0 CLOSED CLOSED
2nd 2 OPEN CLOSED
3rd 4 CLOSED OPEN
4th 6 OPEN OPEN
Rack Address
Switches SW1-3 through SW1-8 are used to set the
rack address of the Remote I/O Interface. Use Table
on page 5 to select the correct switch settings for the
rack address.
Note that setting a switch OPEN acts as a
logical “1” and that SW1-3 represents the least significant bit
(LSB) of the rack address.
Network Data Rate
SW2-1 and SW2-2 set the data rate of the
Allen-Bradley network. Use Table 2-4 to select the
correct switch settings for the network.
Table 2-4. Network Data Rate
Remote I/O Data Rate
SW2 Switch Settings
1 2
57.6 Kbps CLOSED CLOSED
115.2 Kbps OPEN CLOSED
230.4 Kbps CLOSED OPEN
OPEN OPEN
Last Rack
Set SW2-3 OPEN if the Remote I/O Interface link
address includes the highest module group in this rack
address.
Rack Size
At this time only a quarter rack size is supported. This
option has been included for possible future expansion
to include half rack support. Switch 2-4 is ignored.
Block Transfer
Set SW2-6 CLOSED to enable or OPEN to disable
block transfer to the Remote I/O Interface. Setting this
switch OPEN causes the Remote I/O Interface to
ignore unsolicited block transfer requests from the
PLC.