Technical data

8.4 Example of a Layer 2 Link
This section describes how two stations can be configured with COM 5430
TF/COM 5431 FMS to be able to exchange data via direct access to layer 2
services.
You should have worked through Chapters 3 to 6 of this manual and be
familiar with the handling blocks and STEP 5.
Hardware and software requirements
The following hardware is necessary:
➣
Two SIMATIC S5 programmable controllers (PLC 1: S5-155U and
PLC 2: S5-115U)
➣
One CP 5430 TF or CP 5431 FMS per PLC
➣
One RAM submodule per CP 5430 TF or CP 5431 FMS
➣
One RS 485 bus terminal per CP
➣
SINEC L2 bus cable
➣
At least one PG 710, PG 730, PG 750 or PG 770,
or PC
The following software packages are also required:
➣
COM 5430 TF or COM 5431 FMS under SINEC NCM
➣
PG software for STEP 5 programming
➣
Appropriate handling blocks for the PLCs
➣
Diskette with the example programs.
B8976060/02 Free Layer 2 Communication
8 - 35 Volume 1