HBM AED9301B - Profibus Connection

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Profibus connection
HBM AED9301B
3.3 Profibus connection
Profibus DP is fully standardized to IEC61158 / EN50170 for universal automation, so there
is no difficulty in connecting components that conform to the standard.
In the case of the AED9301B, this is a Profibus DP Slave in accordance with DIN19245-3. It
provides a simple and quickly implemented option for connecting electromechanical meas-
urement sensors to automation systems such as SIEMENS SIMATIC S7 or to PCs.
The Profibus is electrically isolated from the measuring system and from the supply voltage,
the transmission procedure is RS485. The maximum possible baud rate for RS485 is
12 Mbit/s. The node address can be set via two BCD-coded rotary switches “S5” and “S4”.
The Profibus connection KL3 is equipped with four terminals, so that it can be routed to the
next bus node. The connection cables should be shielded, twisted-pair cables (see Profibus
cable specification).
Bus termination should be activated at both ends of the Profibus line (at the AED switch
“S2 = on”). This switch must be set to “off” for all the other bus nodes. The module can be
disconnected from Profibus for diagnostic purposes (“S3 = off”). The factory default for this is
on.
Profibus
Bus termination
Profibus
Bus link
from Master next device
Adress settings
Fig. 3.3-1: Profibus connection via terminal KL3