ABB AC 800M, User Manual

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Section 2 Transmission Technology PROFIBUS DP/PA Linking Device LD 800P
3BDS009029R5001 B 41
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.
• Support of all standardized PROFIBUS transmission rates from 45.45 kbit/s up
to 12Mbit/s
• Automatic detection of transmission rate
• Fully transparent in the PROFIBUS line
– No configuration and commissioning
– Direct access from PROFIBUS DP master to PROFIBUS PA slaves
– Support of all cyclic and acyclic PROFIBUS protocol services (DP/V1)
– No restriction in PROFIBUS data volume with full 244 Byte read/write
access to each PA slave
• Optional PROFIBUS DP line redundancy
• Power Link Modules integrate bus termination, galvanic isolation and power
supply
• Powering of PROFIBUS PA segments without additional power supply
• Optional Power Link Module with intrinsically safe interface [EEx ia] IIC
For more details, please read the LD 800P product documentation.
Figure 8. PROFIBUS DP/PA Linking Device LD 800P