Siemens SIMATIC PCS 7 Manual page 46

Interface module TPM 478-2
5.1 Product overview
Contents
What is a
TPM 478-2?
Application
options
5-2
This chapter provides a brief overview of the interface module TPM 478-2.
TPM 478-2 is an interface module which is designed in M7-400 technology
of the SIMATIC M7 product family. It is an expansion unit for the central
module FM 456-4, for use with PCS7/TM PLCs.
The following functions are integrated in the TPM 478-2 interface module:
• TELEPERM M I/O functionality.
A highly efficient processor controls the access functions to
TELEPERM M I/O modules via a periodically updated process ima-
ge.This process image fetches input process data and it writes them to the
outputs of the hardware I/O.
Process image data is transferred from the TPM 478-2 to the user program
via driver blocks.
• two I/O bus interfaces for the TELEPERM M basic and expansion cabinet
• I/O bus logic supply with a +5 V bus.
The example below explains how you can use the interface module:
Connecting TM I/O to PCS 7
C79000-G8076-C710-04