Siemens SPC3 Manual de usuario descargar pdf (Pagina 2)

Page 1663

Mar 2008

Siemens ITS

SPC 4-2

The SPC 4-2 is a preprocessing communications chip with a processor interface. It is designed for combined

applications and due to the Low Power Management function, it is ideally suited to use in intrinsically safe applications.

Firmware is offered for the SPC 4-2 by the company TMG itec

. The signals are converted for PROFIBUS PA using

the SIM 1-2 module.

1) Order from:

TMG itec

76137 Karlsruhe

Tel. +49 (0)721 82 80 60

SIM 1-2

The SIM 1-2 supplements the SPC 4-2 or DPC 31. Only a few external components are required in addition to these

ASICs to be able to connect field devices to an intrinsically safe network in accordance with PROFIBUS PA. In

combination with the SPC 4-2 or DPC 31, the functions of a PROFIBUS PA slave can be processed from physical

linking through to communication control.

SIM 1-2 supports all send and receive functions (including Jabber Control) as well as the high-resistance decoupling of

auxiliary power from the bus cable. It provides an adjustable, stabilized supply voltage and also supports configuration

of an electrically isolating power supply with just a few passive components.

The ASIC contains a special interface logic which provides a low-overhead, minimum power interface for galvanic

signal separation as an alternative to the standard signal interface.

It can be connected to all Manchester encoders/decoders to the IEC 61 158-2 standard at 31.25 kbit/s.

1 2 3 4 5 6

Sin comentarios

Siemens SPC3 Manual de usuario Pagina 2