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7.8.11
Channel-Related Diagnostics
Definition
Channel-related diagnostics provides information about channel errors of modules
and provides details of the ID-related diagnostics.
For each item of channel-related diagnostic information, three bytes are inserted in
compliance with the standard IEC 61158/EN 50170, Volume 2, PROFIBUS.
The channel-related diagnostic information follows the module status.
The channel-related diagnostic information does not influence the module status.
Important: Group diagnostics must be activated for each module!
Channel-Related Diagnostics
The maximum amount of channel-related diagnostic information is limited by the
maximum total length of the slave diagnostic information of 96 bytes for the IM 151-
2. The length of the slave diagnostic information depends on the number of items
of channel-related diagnostic information currently pending. If there is more
channel-related diagnostic information than can be included in the slave diagnostic
information, bit 7 "diagnostics overflow" is set in station status 3.
ET 200iS Distributed I/O Station
A5E00087831-02
Commissioning and Diagnostics
7-35
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