00772425 datasheet(38/42 Pages) BURKERT

38 / 42 page

Type büS

Troubleshooting

TROUBLESHOOTING

14.1

Sporadic disconnections

Description:

In a faulty network, it is possible to experience sporadic disconnections. Therefore, one or more devices

may disappear for a few seconds. This is an indication that something has gone wrong.

Common problems:

▪ More or less than two termination resistors

▪ Total cable length is too long

▪ Total stub line length is too long

▪ Bus load is too high

▪ Undersized power supply

Solution:

▪ Measurement of the impedance between CAN-High and CAN-Low. The impedance should be approx.

60 Ω

▪ Reduce the cable length

▪ Reduce the baud rate to the next lower communication speed

▪ Create power segments in the network with more power supplies and Y-connectors

14.2

Red LED (failure)

Description:

The LED of a single device or the entire EDIP network lights up red.

Common problems:

▪ Incorrect connection to the PLC

▪ Device reached critical limit, e.g. power supply too low

▪ EDIP partner is missing

Solution:

▪ Check the cabling to the PLC and configure the PLC with the description files of the device

▪ Check the messages of the device with the PLC or Bürkert Communicator

▪ Check the partner name and mapping

14.3

Orange LED on the device (functional check)

Description:

The LED of a single device or the entire EDIP network lights up orange.

00772425 Datasheet(PDF) 38 Page - Christian Bürkert GmbH & Co. KG