715-0025 v 1.04 CCB # 33
5136-DNS-200X DeviceNet Slave Adapter User’s Guide
© 1999-2002 SST, a division of Woodhead Canada Limited
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Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions
established on page ii of this document.
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5.1.4 Module LED is Flashing Green
If the Module LED is flashing green, this is most likely due to a configuration error. In User Config mode this may indicate
that an invalid Adapter parameter combination has been specified or the configuration specified by the Adapter Module does
not match the actual expansion module configuration currently connected to the 200X Adapter.
5.1.5 Network Status LED is Solid Red
There are 2 cases in which the Network Status LED would be solid red. The first would be if the device fails the Duplicate
MAC ID check sequence during power-up due to a conflicting node ID. The second reason for this condition is a Bus Off
condition caused by excessive errors on the bus. This may be caused by an attempt to go online at an incorrect Baud Rate or
due to excessive noise on the DeviceNet bus.
To attempt to recover from either condition simply remove the DeviceNet connector from the device and re-insert it again.
The 200S device will detect the loss and re-application of Network power and re-initialize the CAN Chip and execute the
Duplicate MAC ID sequence again. To prevent continuous failure of the DUP MAC Check you must either change the MAC
ID of the 200X device or identify and re-configure the conflicting device.
5.1.6 Network Status LED Flashing Red
If the Network Status LED is flashing red one or more I/O connections are in the timeout state. In most cases if the master
has unexpectedly stopped communicating with the device the Master/Slave connection set will automatically release when all
connections have entered the timeout state based on the EPRs configured with the device during connection establishment. If
for some reason any EPR was set to zero (0), the master slave connection set will not release automatically. In this case it
may be necessary to cycle power to remove this condition.
5.1.7 I/O Status LED Flashing Red
If the I/O Status LED is flashing red one or more of the inputs/outputs are faulted. This may be caused by a diagnostic alarm
due to a short circuit on an output module or a missing module due to hot swapping.
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