Printed in the Federal Republic of Germany
TR-Electronic GmbH 2013, All Rights Reserved
08/31/2017
TR - ECE - BA - DGB - 0105 - 03
Page 101 of 103
9.2.2 Fast forward to Loopback
This state is displayed by means of the Sercos-III-LED with flashing pattern # 10,
see Sercos-III-LED on page 84.
A fast forward to loopback error refers to the Sercos communication profile (SCP) and
is output either as error or as warning with the status code = 0x4020.
This message means that the topology state has changed from fast forward (FF=ring)
to loop-back with forward (L&F=line). If the message is output as an error, the
measuring system is switched into the NRT mode. It must be examined whether at the
active connection a cable break is present.
9.2.3 Application errors
This state is displayed by means of the Sercos-III-LED with flashing pattern # 11,
see Sercos-III-LED on page 84.
Application errors refer to the generic device profile (GDP) and report either procedure
command specific states or operational state specific states.
The reports are very extensive. Thus, for the parameter IDN / S-0-0390
Diagnostic
number
, the individual reports have to be taken from the Sercos specification.
For example: status code = 0x0500 means that the procedure command S-0-0099
Reset class 1 diagnostic
was executed.
9.2.4 MST losses
This state is displayed by means of the Sercos-III-LED with flashing pattern # 12,
see Sercos-III-LED on page 84.
This message refers to the Sercos communication profile (SCP) and reports a
communication warning with the code 0xC30E4001.
This message is output if more than 50 % of the operation data of the parameter
S-0-1003
Allowed MST losses in CP3&CP4
are reached. In the device status
S-0-1045
Device Status
(S-DEV) the bits 6 for device warning and 15 for
communication warning are set.
