Commissioning
8.6 Commissioning PROFINET IO
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
8-35
PROFINET IO address areas of the CPUs
Table 8-11 PROFINET IO address areas of the CPUs
Address area 315-2 PN/DP 317-2 PN/DP
PROFINET address area,
inputs and outputs respectively
2048 bytes 8192 bytes
Number of those in process image
for I/Os
Byte 0 to 127 Bytes 0 to 255
1
1
At a CPU 317-2 PN/DP with FW version 2.3.0 or higher, you can set a maxim number of 2047 bytes
for the process image. Default setting of the CPU is byte 0 to 255.
Diagnostics addresses occupy in the input address range 1 byte each for the IO controller,
the PN interface and the IO devices (header module at slot 0), and for each module without
user data within the device (power module of ET 200S, for example). You can use these
addresses, for example, to read module-specific diagnostics data records by calling SFB 52.
The diagnostic addresses are specified in your configuration. If you do not specify any
diagnostic addresses, STEP 7 assigns these DP diagnostic addresses in ascending order,
starting at the highest byte address.
8.6.2 Configuring and commissioning the PROFINET IO system
Overview
There are several ways for you to start with commissioning the PROFINET IO interface of
the CPU, and then the PROFINET IO system:
• Online via MPI/ DP interface
• Online via switch and PN interface
• Offline, by saving the data to an MMC in SIMATIC Manager on your PG, and then
inserting the MMC into the CPU
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