Skov DOL 100 I/O box 10RL, Technical User Manual

Page: 17 / 20

DOL 100 I/O Box
Technical User Guide 17
6 Troubleshooting guide
Defects
No light in RXD (green) and TXD
(red) LED on the CAN bus module
and DOL 100 does not appear as
connected in the production con-
troller. Check the supply to the power supply and check for 24 V DC on the
socket J41 on DOL 100.
TXD (red) LED shines. No light in
RXD (green) and on CAN bus mod-
ule. No data is received from the CAN bus.
Check that the CAN bus cable is connected correctly and that power is
being supplied to the production controller.
DOL 100 does not appear as con-
nected in the production controller. Check that the correct addresses are selected on the I/O modules.
See section Setting up the DOL 100 in the controller [
}
13] .
Check resistance between CAN-Hi and CAN-Lo, the resistance must be
approximately 60 ohms.
If the resistance is > 100 ohms, a termination is missing.
If the resistance is < 45 ohms, there are too many terminations.
All units connected to the CAN bus must be measured without power
supply.