User`s manual

Western Reserve Controls WRC-CANX-xx Series 4
PUB 14.1 User’s Manual
24
9. Summary of Changes to Series 4 from Rev 2 and
Series 3
To facilitate implementation of the new Series 3 CANX products for customers that are currently
users of the CANX Revision 2.xx products, this section summarizes the product changes from Rev 2 to
Series 3.
9.1. DIP Switch Baud Rate Settings
Several new options exist for setting the baud rate on the CANX Series 3.
•
Like the Series 3, the Series 4 has an 8-position DIP switch block. All 8 switches are
defined and used.
•
The Series 4 unit is compatible with all CANopen baud rates. These baud rates are fixed
by setting the 8 position dip switch to the appropriate configuration.
•
Like Series 3, a “remote mode” exists which allows either side to set its baud rate based
on the other side’s BR – in either fixed baud or autobaud.
•
See Section 4.2 above for details.
9.2. Terminating Resistors
The Series 4 has an on-board terminating resistor on each CAN connection that can be
selectively included or excluded from the network circuit. With jumpers W1 and/or W3 in place, the CANX
puts a 121-ohm resistor across the CAN_H and CAN_L lines on sub-network sides A and/or B. See
Figure 4-1and Figure 4-2 for the location of these jumpers.
9.3. Field Programmable Updates
The CANX Series 4 has its program held in flash memory, which can be updated in the field.
Contact the factory for details.