Siemens S7 Uživatelský manuál stáhnout pdf (Strana 150)

Programming FCs (Functions) and FBs for S7 Ethernet CPs

150

SIMATIC NET NCM S7 for Industrial Ethernet

C79000-G8976-C129–06

Table 5-1

ISO Transport ISO-on-TCP TCP UDP

AG_LSEND

(S7-400)

AG_SEND

(S7-300)

8192 bytes 8192 bytes 8192 bytes 2048 bytes

AG_LRECV

(S7-400)

AG_RECV

(S7-300)

8192 bytes 8192 bytes 8192 bytes 2048 bytes

Note

For information on the length of the data area you can transfer with older versions

of the Ethernet CPs, refer to the product information bulletin / manual of the

Ethernet CP you are using /1/.

Working without the Job Header

On specified connections, the address and job parameters are specified by the

connection configuration. The user program only provides the user data in the UDP

data area when sending with AG_SEND / AG_LSEND or receives the data with

AG_RECV / AG_LRECV.

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