Technical data

Active components
4.4 Active components for interfacing to PROFIBUS PA
PROFIBUS Network Manual
92 System Manual, Edition 04/2009, C79000-G8976-C124-03
([
DP/PA coupler
Hazardous (Ex) area
"Programming, operating and
monitoring"
SIMATIC PCS 7 or third-party tool for
parameter assignment
PDM or other tool for parame-
ter assignment
Cell level
Field level
Management
level
DP/PA coupler Ex (i)
Industrial Ethernet
PROFIBUS-DP
PROFIBUS-PA
ET 200X
DP-Master
Figure 4-18 Logical integration of DP/PA couplers into the system
For more information on expanding the PA line, refer to section "Field distributors AFD/AFS
(Page
97)"
Areas of application of the DP/PA coupler
The DP/PA coupler is available in two versions:
● DP/PA coupler Ex [ia]: You can attach all field devices that are certified for
PROFIBUS PA and that are inside the hazardous area.
● DP/PA coupler FDC 157-0: You can attach all field devices that are certified for
PROFIBUS PA and that are outside the hazardous area.
The DP/PA coupler is "related equipment" in compliance with EN 50014 or EN 50020.
Properties of the DP/PA coupler (general)
The DP/PA coupler FDC 157-0 (6ES7 157-0AC83-0XA0) has the following characteristics:
● Electrical isolation between PROFIBUS DP and PROFIBUS PA
● Conversion of the physical transmission properties between RS485 and IEC 611582
● Diagnostics using LEDs
● Transmission speed on PROFIBUS DP 45.45 kbps
● Transmission speed on PROFIBUSPA 31.25 kbps
● Integrated power supply unit