MorphuisOGrady
Member
OP
Guys,
Thanks very much for all your suggestions. I am going back to site tomorrow to investigate further. Unfortunately our Rockwell Rep was unable to provide me with a DNet monitoring tool today so tomorrow all i have is my good old multimeter. Not the man for the job but the customer is screaming so It will have to do.
What i propose to do tomorrow on the troubled networks are as follows:
1. Check (for the 100th time) for loose connnections.
2. Verify DeviceNet voltage is within spec at both ends and middle of trunk line.
3. Ensure termination resistors are ok.
4. Change interscan delay on DNB's from 10mSec to 100mSec
5. Up baud-rates on Networks to 500k. (Cables are well within spec to allow for this)
Any other suggestions would be greatly appreciated. I accept without the correct tools its going to be tough if even possible.
Thanks
Thanks very much for all your suggestions. I am going back to site tomorrow to investigate further. Unfortunately our Rockwell Rep was unable to provide me with a DNet monitoring tool today so tomorrow all i have is my good old multimeter. Not the man for the job but the customer is screaming so It will have to do.
What i propose to do tomorrow on the troubled networks are as follows:
1. Check (for the 100th time) for loose connnections.
2. Verify DeviceNet voltage is within spec at both ends and middle of trunk line.
3. Ensure termination resistors are ok.
4. Change interscan delay on DNB's from 10mSec to 100mSec
5. Up baud-rates on Networks to 500k. (Cables are well within spec to allow for this)
Any other suggestions would be greatly appreciated. I accept without the correct tools its going to be tough if even possible.
Thanks