Siemens SIMATIC TIWAY 1 Manual de usuario descargar pdf (Pagina 22)

OPERATION

AND

APPLICATION

UNILINK HOST

ADAPTER 2–12

USER MANUAL

2.5 SETTING THE OPERATING MODE

Each adapter must be configured for one of the six possible operating modes.

The mode is configured with the CONFIGURE ADAPTER command with the

exception of the Standalone NM mode, which is chosen by setting Positions 9

and

of Dipswitch 1 down. The defaults and dipswitch settings are discussed

further in Paragraph 2.5.1. There are three configuration commands; the

CONFIGURE

ADAPTER command, the

CONFIGURE HIU command, and the

CONFIGURE

NM command.

2.5.1

Configuration Defaults and Dipswitch Settings

Most of the parameters associated with the configuration commands have

default values chosen to help you install an operating host interface with a

minimum amount of effort. As your network expands and you gain experience

with

the advanced commands, you can change the defaults to tailor the network

performance

to your needs.

The adapter has two 10-position dipswitch banks, located behind the front

access door as shown in Figure 2–11. Most of the settings on the dipswitches

relate

to the parameters for the host and TIW

Y I ports. However

, the setting of

Position

9 on Dipswitch 2 determines the default mode value. When Position 9 is

up, the adapter will default to an HIU/EHA and when Position 9 is down, the

adapter

will default to an MHIU/EHA.

LEDsResetNumber

Number 1

Figure 2–11 Dipswitch Positions

The

default mode will be chosen when you issue one

of the Base HIU commands

before issuing the CONFIGURE ADAPTER command. In the later case, the

adapter

assumes the

default mode from the setting of Position 9 on Dipswitch 2

and

assumes the EHA mode. This means that after the adapter is reset, if you

issue

any of commands 01 through 08, the adapter will assume the MHIU/EHA

HIU/EHA mode depending on the setting of Position 9.

2.5.2

The CONFIGURE ADAPTER Command

The first command your application software should send is the CONFIGURE

ADAPTER

command, code 20. The main function of this command is to set the

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 207 208

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