User`s manual

Western Reserve Controls WRC-CANX-xx Series 3
PUB 14.0 User’s Manual
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4. Recalculate the network traffic and bandwidth without the CANX.
10. Summary of Changes to Series 3 from Rev 2
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.
10.1. DIP Switch Baud Rate Settings
Several new options exist for setting the baud rate on the CANX Series 3.
• The Series 3 has an 8-position DIP switch block. All 8 switches are defined and used.
• Both sides’ baud rates can be set up independently.
• 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 5.2 above for details.
10.2. Indicator LED’s
The definition of some states of the LEDs have changed. Refer to Table 5-2, Table 5-3 and Table 5-4
for details.
10.3. Terminating Resistors
The Series 3 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 W2 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 5-1and
Figure 5-2 for the location of these jumpers.
10.4. Field Programmable Updates
The CANX Series 3 has its program held in flash memory, which can be updated in the field.
Contact the factory for details.