Rockwell Automation 1395 Node Adapter Board - Manual (Page 55)

Chapter 4
Installation
4-5
Switch Settings The Node Adapter Board contains 2 DIP switches, U5 and U6 which
perform several different setup functions. The first six positions of switch
U5 determine the rack number (in octal) used by the PLC Controller
corresponding to the drive. Any of the rack numbers listed in Table 4.A
may be used. Each rack number may only be used once, therefore, in
applications where several drives are connected to the same
communications network (Figure 4.3) each drive must be associated with a
different rack number. Switches SW7 and SW8 of U5 determine the rack
configuration.
SW1 of U6 (Table 4.C) determines the communication baud rate between
the PLC Controller and the Node Adapter Board. The baud rate is
dependent on the specific PLC Controller hardware being used. Switch
SW4 of U6 (Table 4.D) determines the termination resistor setup. In all
cases, the last Node Adapter Board in the communication network must
have the terminating resistor connected. In cases where only one board is
used, the terminating resistor must be connected. If a daisy chain is used,
only the last board in the chain will have the terminating resistor
connected. All other boards in a daisy chain MUST have the resistor left
NOT CONNECTED.
Refer to the following procedure and Tables 4.A through 4.D for proper
switch settings.
4. 1. Determine the drive address and set the corresponding rack number
using switches SW1 through SW6 (U5) and Table 4.A.
2. 3. Determine the required rack setup configuration and set switches
SW7 and SW8 (U5) per Table 4.B.
4. 5. Determine the required baud rate and set switch SW1 (U6) per
Table 4.C.
6. 7. Determine whether a terminating resistor is required and set switch
SW4 (U6) appropriately using Table 4.D.