Siemens CM343 Series Manual de servicio descargar pdf (Pagina 54)

5 Using the Command Interface

CP 343−2 / CP 343−2 P AS−Interface Master

Release 08/2008

C79000−G8976−C149−04

Call Interface

ACT

DONE

ASI_3422

STARTUP ERROR

STATUS

BOOL

DWORD

BOOL

LADDR

SEND

WORD

ANY

RECVANY

DWORD

Table 6-1 Formal Parameters

Name

Para Type Data Type Memory Area Remarks

ACT I BOOL I,Q,M,D,L,constant As long as ACT = 1, command

processing is started provided no

other call is being processed.

STARTUP I BOOL I,Q,M,D,L,constant A CPU startup is indicated to the FC

by STARTUP = 1. After the function is

run through the first time, STARTUP

must be reset by the user.

LADDR I WORD I,Q,M,D,L,constant Base address of the CP 343-2 in the

S7 address space.

The module base address is specified

during STEP 7 configuration.

SEND I ANY I,Q,M,D,L Send buffer

The parameter references a memory

area in which the command must be

specified by the user.

for example: P#DB20.DBX 20.0 byte

RECV I ANY I,Q,M,D,L Receive buffer

This buffer is only relevant for

commands that supply response

data. The parameter references a

memory area in which the command

response is stored. The length

information in the ANY pointer

specified here is irrelevant. The FC

itself obtains the length of the

response data.

for example: P#DB30.DBX 20.0 byte

DONE Q BOOL Q,M,D,L DONE = 1 signals ’job completed

without error’.

ERROR Q BOOL Q,M,D,L ERROR = 1 signals ’job terminated

with error’.

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