Siemens SIMATIC TIWAY 1 Manual de usuario descargar pdf (Pagina 30)

OPERATION

AND

APPLICATION

UNILINK HOST

ADAPTER 2–20

USER MANUAL

2.7 THE HIU AS A SECONDARY

The

HIU function appears as a special secondary device to the NM function. In

addition to queuing network requests for the NM function to process, the HIU

function will respond to TIWAY I Primitives 02 — Machine Status, 03 —

Machine Type/Configuration, and 04 — Primitive Format Configuration. The

TIWAY I Systems Manual provides more details on the format and use of

Primitives.

2.7.1 Primitive

02 Response

The Primitive 02 response will be returned as follows (spaces were added for

clarity).

LLLL

02 HH DD EE FF

Where

LLLL is the Primitive length,

HH will be 00 indicating that it is operational and

performing instruction execution,

DD will be 01 indicating that the Auxiliary Power Source

Status is not available,

EE will be 00 indicating that the NIM is operational,

FF will be 00 and has no meaning for an HIU.

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Siemens SIMATIC TIWAY 1 Manual de usuario Pagina 30