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terminate CAN
I'm having an issue on a MD4 where I have turned the terminate CAN off on all 4 busses but they still turn on the internal resistors. I end up with 40 ohms as I have 2 physical termination resistors already. If I power cycle the MD4 the resistance will be 40 ohms for a min or two and then it drops to 60 as it should be. then I power cycle the Md4 and resistance goes to 40 again and then drops after a min or two. Its seems like the MD4 will not take the changes but it has been set this way for several months and it has been reprogrammed dozens of times
Customer support service by UserEcho
I can confirm that this happens on MD4, and also on MC4x original. In a system where all modules are powered at the same time, there is no problem. But if some nodes remain active when the MD4 is switched off, it can cause issues.
On the MC4x-M24 we changed the circuit design to solve this issue.
On the MD5, there is no internal SW controlled termination.
Hello Gustav, Yes I have the new modules ordered and move forward with them from now on. Thanks