Manual – DFE32B Fieldbus Interface PROFINET IO
43
5
Auto setup for gateway operation
Project Planning with PROFINET
5.2
Auto setup for gateway operation
The Auto setup function enables startup of the DFE32B as gateway to be performed
without a PC. It is activated via the auto setup DIP switch (see section "Installing the
DFE32B/UOH11B gateway", page 18).
As a first step, the DFE32B searches for drive inverters on the SBus below its hierarchi-
cal level. This process is indicated by the
H1
LED (system error) flashing briefly. Differ-
ent SBus addresses must be set for the drive inverters (P813). We recommend assign-
ing the addresses beginning with address 1 in ascending order based on the arrange-
ment of inverters in the switch cabinet. The process image on the fieldbus side is ex-
panded by three words for each detected drive inverter.
The
H1
LED remains lit if no drive inverter was located. A total of up to eight drive invert-
ers is taken into account. The following figure shows the process image for three drive
inverters with three words each of process output data and process input data.
After the search is completed, the DFE32B periodically exchanges three process data
words with each connected drive inverter. The process output data are fetched from the
fieldbus, divided into blocks of three and transmitted. The drive inverters read the pro-
cess input data, put them together and send them to the fieldbus master.
The cycle time of the SBus communication is 2 ms per node at a baud rate of 500 kBit/s
without any additional engineering activities.
For an application with 8 inverters on the SBus, the cycle time of the process data up-
date is then 8 x 2 ms = 16 ms.
INFORMATION
Switching on the Auto-setup DIP switch causes the function to be performed once.
The Auto setup DIP switch must then remain in the ON position.
The function can
be reactivated by turning the DIP switch off and back on again.
INFORMATION
Perform auto setup again in the following cases, since the DFE32B stores these val-
ues once during auto setup. All devices installed at the SBus must be switched on. At
the same time, the process data assignments of the connected drive inverters may not
be changed dynamically after Auto setup.
• If you change the process data assignment of the drive inverters connected to the
DFE32B.
• If you changed the SBus address of one of the connected devices.
• If you add or remove devices.
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