Technical data

1 Introduction
The manual for the CP 5430 TF and CP 5431 FMS is divided into two
volumes. This volume, Volume 1 of the manual describes the PROFIBUS
(PROcess FIeld BUS) communication available with the two CPs.
Differences in communication and performance are pointed out in the
appropriate chapters. The communications processors are configured with
COM 5430 TF/COM 5431 FMS under SINEC-NCM.
PROFIBUS is a bus system for applications in automation engineering in
areas closely associated with the process and allows easy implementation
of bus interfaces. With the PROFIBUS, SIMATIC S5 programmable
controllers, programmers, AT-compatible PCs and other control systems
and, of course, PROFIBUS-compatible devices from various manufacturers
can be networked.
The CP 5430 TF is used to connect SIMATIC S5 programmable controllers
to the SINEC L2/L2FO local area network and complies with the
PROFIBUS standard (DIN 19245) Part 1 /1/. The range of performance
described in Volume 2 extends the functions of the CP by the services
described in the TF standard for SINEC TF. The CP 5430 TF also provides
the L2-DP (distributed I/Os) service.
The CP 5431 FMS communications processor is used to connect
programmable controllers of the SIMATIC S5 range to the local area
network SINEC L2/L2FO and complies with the PROFIBUS standard (DIN
19245) both in Part 1 and Part 2 /10/ as an active station on the bus
(PROFIBUS multivendor network). The CP 5431 FMS also provides the
L2-DP (distributed I/Os) service.
SINEC L2-DP is the Siemens implementation of DIN E19245 Part 3
PROFIBUS-DP /11/. The L2-DP protocol uses a subset of the functions
specified in DIN 19245 Part 1 for layers 1 and 2 and supplements these for
the special applications in distributed I/Os.
The performance of the CP 5431 FMS described in Volume 2 extends the
functions of the CP by the services described in the FMS standard.
B8976060/02 Introduction
1 - 1 Volume 1