Communication System Manual 3WN6 Circuit-Breakers
Version 1.0 (05/98) Copyright Siemens AG 1998. All rights reserved. 35
Step 8: Programming of bus master and data visualization
The last step is to provide software for the bus master which enables it to communicate with the
circuit-breaker. The cyclic data of 3WN6 (cf. section 3.2, page 28) can be read and written directly
in the cyclic part of the defined I/O area (bytes 9 - 12) of the bus master (see Step 6). Acyclic data
(cf. page 37 ff.) are transferred as the result of a message request in the acyclic part of the I/O area
(bytes 1 - 8), which issues the appropriate command to 3WN6. The 3WN6 message requests are
listed in full and explained on pages 37 ff.
In the specific case of SIMATIC S5 or S7, a standard software block is available for acyclic
communication. This software can be adapted to the user-specific information and control
requirements and automatically manages the acyclic data traffic between the 3WN6 and the
SIMATIC S5/S7. Please refer to the section entitled "Description of software block required for
utilizing communication functions with SIMATIC S5 and S7" for a detailed description of this
SIMATIC S5/S7 software block. The example given for SIMATIC S5/S7 can also be used as the
basis for the programming other PROFIBUS-DP bus masters.
The data in the master are now available for use by the customer. Some form of visualization with
a user-friendly interface is generally implemented. The following standard programs are available to
the customer for this purpose:
• The Win3WN6
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software provides the user with the full functionality of the 3WN6 circuit-
breaker, i.e. start-up, operation and monitoring, at an attractive price:
• Data exchange with release types D, E/F, H, J/K, N, P
• Capable of running under Windows 95 or Windows NT 4.0
• Configurations: SIMATIC S5, S7 or PROFIBUS-DP compatible PC as master
• Win3WN6 communicates with the circuit-breaker either via the RS-232 interface on the
release (instead of the handheld operator panel) or via PROFIBUS-DP (with SIMATIC S5,
S7 or a PC as bus master)
• Overview of circuit-breaker state, "Tripped" signals (see screenshot)
• Switching actions (password-protected)
• Overview of operational data (e.g. phase currents)
• Simple setting of protection parameters (password-protected)
Example of Win3WN6 screenshot
Most important advantage of Win3WN6: fast and economical use of circuit-breaker functions
and convenient setting of protection parameters via the bus or via a local laptop connection.
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Shipping of Win3WN6 software starts in 07/98.
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