Lenze EMF2179IB - Manual (Page 32)

EMF2179IB communication module (DeviceNet)
Technical data
Communication times
5
5.3
5.3.5

5.3-3 EDSDEN EN 02/2006
5.3.5 Communication times

Note!
The communication times in the DeviceNet depend on the
ƒ Signal propagation delay of the EMF 2179IBcommunication
module
ƒ Processing time in the controller
ƒ Telegram run time on the bus cable
– Baud rate
– Telegram length
– Inter scan delay - time of the scanner
– Number of the DeviceNet - nodes
In contrast to the parallel process data processing for the 821X / 822X /
824X / 8200 vector device series, the process and parameter data in the
820X device series are processed successively. Therefore the response times
to the process data depend on the preceding actions.
Furthermore, the processing times of the individual telegrams depend on
the conditioning of the actual values (process data from the drive). If this
data (status word, actual frequency value) is not required, it can be
deactivated by means of the ”bit 15” status word (PE inhibit).
The individual telegram run times are as follows:
Parameter data PE inhibit = 0 PE inhibit = 1
Processing time 62...140 ms 62...70 ms
Process data PE inhibit = 0 PE inhibit = 1
Processing time with regard to a change of
one value to the drive
27...105 ms 27...35 ms
Processing time with regard to a change of
two values to the drive
62...140 ms 4...70 ms
Processing times for process data from the
drive
108...140 ms Not possible
Parameter data Process data
30 ... 50 ms 3 ... 5 ms
The processing times for the process data
refer to the sync telegram.
820X processing times
Processing times
821X/822X/824X/8200
vector