ibaBM-DPM-S Manual
Issue 2.11
7
2 Introduction
As a member of the bus monitor family ("ibaBM-.."), the ibaBM-DPM-S device is used
by the iba process data acquisition or control systems as an interface for logging data
on the PROFIBUS DP ("...DPM.."). It belongs to a new generation of devices ("...-S")
with a modular construction, which, among other things, permits a higher rate of data
transmission to ibaPDA systems.
The device can also be used as a replacement for its predecessor ibaBM-DPM-64. The
corresponding mode of operation can be activated in the web interface of the device. The
behavior then is exactly the same like of the new ibaBM-DPM-S-64. To get more informa-
tion about this mode of operation please refer to the manual of the ibaBM-DPM-S-64. In
the following only the ibaBM-DPM-S functions are described.
In contrast to its predecessor, the ibaBM-DPM-64, the new device provides two basic
modes of operation which can be used alone or simultaneously: the so-called "sniffer"
mode and the active slave mode.
Both modes can also be used for operation of the ibaBM-DPM-S on the redundant
PROFIBUS with SIMATIC S7-400H controls.
Sniffer mode
In sniffer mode you can use the device to read all data sent on a PROFIBUS without re-
quiring a special PROFIBUS configuration and without the device itself being an active sta-
tion on the bus.
Fig. 1: Principle of operation in sniffer mode
Mode as active slave
In active slave mode, by contrast, the device provides up to eight DP slaves and is there-
fore an active station on the PROFIBUS (for example like a Siemens ET200). This means
that it can be seamlessly integrated into an existing PROFIBUS DP network with a stan-
dard DP master. Only the appropriate slave addresses are required in the PROFIBUS con-
figuration, and the device must be provided with data.
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