Endress+Hauser Promag 53 - PROFIBUS-DP System Architecture

Promag 53 PROFIBUS-DP/-PA 5 Operation
Endress+Hauser 71
5.3.2 PROFIBUS-DP system architecture
Fig. 46: PROFIBUS-DP diagram
1 = Automation control system, 2 = Commuwin II operating program,
3 = PROFIBUS-DP RS 485 line (max. 12 MBaud)
General information
The Promag 53 can be equipped with a PROFIBUS-DP interface (decentral peripheral)
in accordance with the fieldbus standard PROFIBUS-DP (EN 50170 Volume 2), which
utilises the RS485 technology.
As a consequence, the Promag 53 can exchange data with automation control systems,
which satisfy this standard. The integration in an automation control system must be in
accordance with the PROFIBUS-PA Profile 3.0 specifications.
Data transmission rate
The Promag 53's maximum PROFIBUS-DP data transmission rate is 12 Mbaud.
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Note:
• The device is able to automatically determine the data transmission rate. We recom-
mend that, before you load a new data transmission rate, you reset the device:
– via the function: SUPERVISION
→ SYSTEM → OPERATION → SYSTEM RESET
– by switching the supply voltage off and back on again
• Information about bus terminators can be found on Page 47.
Communications partner
In a automation control system, the Promag always serves as a slave and can thus,
depending on the type of application, exchange data with one or more masters.
The master can be a automation control system, a PLC or a PC with a PROFIBUS-DP
communications adapter card.
Filling function
In contrast to the functionality of a Promag 53 that does not support the PROFIBUS, the
internal filling function is not integrated in the PROFIBUS-DP devices, since the device
does not have any relay functions.
However, it is still possible to use a filling function, for some applications, using the total-
izer functionality.
F06-xxxPBxxx-02-xx-xx-xx-003
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