Siemens SIMATIC TIWAY 1 Manual de usuario descargar pdf (Pagina 102)

NIM Primitives

4-49

SIMATIC TIWAY I Series 500 NIM User Manual

The first request also contains the “between response to request” time-out

value. This value corresponds to the number of seconds that the attached

device will wait for the next upload request. If the time expires, the

attached device will exit upload mode. The first response also returns the

actual time-out value that will be used, since some attached devices may

support a maximum time-out value less than the value requested.

Upload Request Parameter Descriptions. The basic format of the

request is as follows:

LLLL 58 XX

LLLL 58 00 RRRR MMMM OOOO

LLLL 58 01 RRRR YYYY DD ... DD

LLLL 58 02 RRRR

LLLL 58 03 RRRR

where:

Symbol Value Definition

00 Initial upload request

01 Next block upload request

02 End upload request acknowledge

03 Abort upload operation

YYYY (number) Requested block sequence number starting with 0

(present when CC = 1)

RRRR (number) Host defined reference field returned with response

MMMM (binary) Upload configuration bit map present only when

CC = 0. A1 in a bit position indicates that the

corresponding segment will be included in the upload.

The chart below illustrates this concept.

OOOO (number) Time-out value in one second increments (present only

when CC = 0)

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Siemens SIMATIC TIWAY 1 Manual de usuario Pagina 102