Siemens SIMATIC TIWAY 1 Uživatelský manuál stáhnout pdf (Strana 17)

TIWAY 1 Overview

1-6

TIWAY 1 TI505 NIM User Manual

Figure 2

is a simplified block diagram of the TI505 NIM. The media interface blocks are

intentionally

left unlabeled because the type of media interface depends on which NIM

model

you are using. The blocks are described as follows.

 Special

Function Interface Controller (SFIC) — delivers and receives P/C com

munications.

 NIM controller — translates the communication (between Primitives and the

P/C

communication language).

 Communications

controller — supervises data

transactions between the

NIM

and the network host.

NETWORK INTERF

ACE MODULE

SPECIAL

FUNCTION

INTERFACE

CONTROLLER

NIM

CONTROLLER

COMM.

CONTROLLER

POWER









MEDIA

CIRCUITRY

NETWORK

COMM.

MEDIA

Figure 2

NIM Simplified Block Diagram

The

basic difference in the NIM models is the configuration of the media circuitry

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 117 118

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