Product specifications

Recommended Components Appendix C Recommended Components
412 3BSE036351-510 A
PROFIBUS DP/PA
Linking Device
(LD 800P)
LD 800P performs the following tasks:
• Potential separation between the PROFIBUS DP and
the PROFIBUS PA
• Conversion of the RS 485 physical arrangement of the
PROFIBUS DP to the physical arrangement based on
IEC 61158-2 of the PROFIBUS PA.
• Adapting the PROFIBUS DP transfer rate to the
PROFIBUS PA transfer rate of 31.25 kBd.
• Power supply of PROFIBUS PA stations over the bus
line.
• Diagnostics via LEDs.
• Ensuring intrinsic safety if the PL 890 power link module
with an intrinsically safe interface is used.
A PROFIBUS DP master (class 1 master), which organizes
the exchange of process data, is contained in the controller
(PLC/PCS). Moreover, a configuration tool, usually a PC,
can be connected as class 2 master to the PROFIBUS DP.
Parameterization and configuration of the bus elements
usually takes place by means of this configuration tool - even
during operation. This is performed using the acyclic
channel of the PROFIBUS DP or PROFIBUS PA. LD 800P
supports both cyclic as well as acyclic PROFIBUS
communication.
Table 134. Recommended Components – PROFIBUS DP (Continued)
Component Description