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Unread 18-11-2011, 11:17
jwakeman jwakeman is offline
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Re: Jaguars not passing CAN communications

Quote:
Originally Posted by linuxboy View Post
You need a terminating resistor on both ends of the cable (the serial port end and the terminator end).
The following is from the MDL-BDC-24 - Getting Started Guide:
Quote:
RS232 Cable Assembly
Follow these steps to complete cable assembly (shown in Figure A-4):
1. Take the Modular Adapter and cut the black wire as short as possible. This wire is unused.
2. Cut off the terminals on the Red and Green wires. Strip then solder the Red and Green wires
to the 100 resistor. Use a section of heat shrink to protect the resistor and solder connections.
3. Insert remaining terminals into the DB9 receptacle. Pin numbers are indicated on the plastic
connector body.
– WhitePin 3
– Blue2
– YellowPin 5
4. Slide the back-shell over the connector, then insert the modular cable to complete the
assembly.
This sounds like they only expect 1 terminating restistor to be part of the RS232 - CAN cable, at the RS232 end. I looked at the guide you linked to and it does seem they expect a resistor at each end of the cable..seems like a conflict here but the "Getting Started Guide" does look more official to me. I attached this document. I guess it makes sense that this cable should only contain one resistor. If i understand correctly you want one resistor at each end of your network. If this cable contains two resistors it seems you would end up with three total resistors once you add one at the tail end of you daisy chain..
Attached Files
File Type: pdf MDL-BDC24_GSG.pdf (833.2 KB, 13 views)
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