User Manual

Use
The purpose of the link is to connect two media, the P-bus and the Profibus DP,
thereby allowing access to the DESIGO I/O modules from a SIMATIC. In the SIMATIC,
the DESIGO I/O modules are treated as standard Profibus DP data points. This
enables them to be integrated into a building management system such as SICLIMAT
X or into the DESIGO INSIGHT building automation and control system.
On the Profibus, the link operates as a Profibus DP slave, supporting datagram traffic in
the direction of the Profibus DP master (SIMATIC S7). On the P-bus, the link operates
as the P-bus master, and is responsible for the flow of data to and from the DESIGO
I/O modules. All data transferred via the DP/P-bus link is converted into the datagram
format used by the communications partner.
Compatibility
The DP/P-bus link can be combined with the following DESIGO I/O modules:
Digital In
Load
units
Input
bytes
Output
bytes
Comments
PTM1.2D20 Digital input 2 x DI;
volt-free contacts DC 22 V
2 1 0
PTM1.4D20 Digital input 4 x DI;
volt-free contacts DC 22 V
1 1 0
PTM1.4D20R Digital input 4 x DI;
open contact
1 1 0
PTM1.8D20E Digital input 8 x DI;
volt-free contacts
1 1 0
PTM1.2D42 Digital input 2 x DI
not electrically isolated;
voltage signaling module
2 1 0
PTM1.2D250 Digital input 2 x DI
electrically isolated;
voltage signaling module
2 1 0
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Siemens Building Technologies DP/P-bus link CK1N9871en
Building Automation 23.04.2003