Cpu 31X-2 As Dp Master/Dp Slave And Direct Communication; Information On Dpv1 Functionality; Dp Address Areas Of The Cpus 31X-2; Cpu 31X-2 As Dp Master - Siemens SIMATIC S7-300 Series Reference Manual

CPU 31x-2 as DP Master/DP Slave and
Direct Communication
Introduction
In this chapter you will find the features and technical specifications of the CPUs
315-2 DP, 316-2DP and 318-2. You will need these in order to use the CPU as a
DP master or a DP slave and configure it for direct communication.
Agreement: Since DP Master/Slave behavior is the same for all CPUs, the CPUs
described below are referred to as CPU 31x-2.
Note on CPU 318-2: With a CPU 318-2 you can operate the MPI-/DP interface as
DP interface. In this case, however, you can only configure it as DP Master and
not as DP Slave.
In This Chapter
Section
2.1

Information on DPV1 Functionality

2.2

DP Address Areas of the CPUs 31x-2

2.3

CPU 31x-2 as DP Master

2.4

Diagnostics of the CPU 31x-2 as DP Master

2.5 CPU 31x-2 as DP Slave
2.6 Diagnostics of the CPU 31x-2 as DP Slave
2.7 Direct data exchange
2.8 Diagnosis with Direct Communication
Additional Literature
Descriptions and notes on system configuration, configuration of a PROFIBUS
subnet and on diagnostics in a PROFIBUS subnet is found in the STEP 7 Online
Help.
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
Contents
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