Reference documents – ProSoft Technology WRC-CANX User Manual
Page 7
Western Reserve Controls
WRC-CANX-xx Series 4
PUB 14.1
User’s Manual
3
Whenever a message is transmitted on the Bus to which CANX is connected, CANX receives the
message on the side where it was initiated and performs a store-and-forward of the message to the other
side. It then transmits the message to the bus on the other side, following the defined bus arbitration rules.
This action is performed for any valid CAN message independent of who generated it or to whom it is
intended.
There is approximately a 75 µsec propagation delay of the message through the CANX.
The CANX is not addressed as a specific device on the Bus and cannot be interrogated by other
nodes. It is transparent to all other nodes on the bus.
Figure 1-2 Typical CANX network configuration
1.4. Reference Documents
The following documents are referenced in this User’s Manual
* ODVA DeviceNet Specification Volume I, Release 2.0 or CIP specification Volume 3
* Honeywell Micro Switch Specification GS 052 104, “SDS Smart Distributed System Physical
Layer Specification”, release date 12/8/1994
Network B
A
B
PS
PS
CAN-Bus
Master
T
T
T
T
Network A
Terminating resistor requirements indicated by “T”
WRC-CANX
I/O Nodes
I/O Nodes