S7 300 or 400 supports IEC60870-5-103

Hello Ravi;

Standard S7-300 and S7-400 CPUs do not support IEC-60870-5 protocols natively.

However Siemens provides so-called Siplus RIC bundles (including the CPU, MMC card, communication interface module and program blocks for the specific IEC 60870-5 variant you choose) that are dedicated to sub-station communications.

See here (in the Siemens Industry Mall) for more details (RIC bundles are also available for the S7-400, look at the navigation tree at the left of the link page):

SIPLUS RIC S7-300 bundles IEC 60870 - Industry Mall

Overview

If a SIMATIC S7-300 based system is to communicate with a Siemens control center, e.g. SIMATIC PCS 7 TeleControl, WinCC TeleControl, WinCC OA, or a control center of a third-party supplier using the IEC60870-5 telecontrol standard, the IEC 60870-5-101 (serial), -103 (protection) or -104 (TCP/IP) telecontrol protocols can be used in the SIMATIC automation systems.

SIPLUS RIC bundles offer an integrated, scalable system based on SIMATICS7-300 functions, for the following data quantities:

• 200 information points, with CPU314

• 1000 information points, with CPU315

• 2000 information points, with CPU317

• 5000 information points, with CPU319

The non-retain memory can now also be used for buffering message frames. Longer communication failure times can thus be bridged. The SIPLUS RIC software libraries are based on the standard SIMATIC Manager and can be used on various, mutually compatible types of SIMATIC S7 devices – this saves hardware costs and programming overhead.

Example: Part number of the S7-315-2PN based RIC bundle for IEC 60870-5-103 protocol:

Finally, have a look at the following manual on the program blocks for IEC 60870-5-103:

SIPLUS RIC IEC on S7 Functional description IEC 60870-5-103 Master Version V1.5

Hope this helps,

Daniel Chartier