Westermo FD-10 - Manual (Page 21)

21 6630-2212
Min/max random delay Create a random delay until sending the initial frame at
at initiation [ms] point to point mode, to avoid collisions after start up or
at disturbed communication. Default is min 200 and max
500. For radio communications these times normally
need to be increased, min 500 and max 800 is recom-
mended.
Fixed frame length Fixed 25 byte frame length. Should not be used.
20 data bytes Only when used together with old system.
Fixed frame length Fixed 37 byte frame length. Should not be used.
32 data bytes Only when used together with old system.
Variable frame length Should be selected for all Westermo Fieldbus Adapters.
1..249 data bytes
PROFIBUS-DP > Expert parameters
Enable/Disable Stat Diag When set to enable, the setting of the PROFIBUS DP
diagnostic information Stat_Diag (static diagnostics)
flag is enabled. Disable may be used when the PROFIBUS
DP master don’t handle Stat_Diag. Default is Enable.
Failed frames until set Only for Point to point transfer.
Stat Diag Set maximum number of consecutive sent frames without
any correct acknowledge.When exceeded will the
Stat_Diag flag be set. Default is 3. Can be increased if
transmission line is disturbed and that is acceptable.
Timeout until set Only for Addressed transfer.
Stat Diag Set maximum time in seconds since last received frame,
or time since device set in normal operation (power on),
without any new correct received frame.When time is
exceeded will the Stat_Diag flag be set. Default is 3. Can
be increased if it is long time between transfer of data
with this device and/or the transmission line is disturbed.
ID number Show the ID number of FD-10. Can’t be changed.
7.1.2 PROFIBUS DP I/O data
Ordinary PROFIBUS DP input and output data are used by FD-10. No additional
programming of the PROFIBUS DP master is needed for I/O data transfer.