Siemens Simantic Net NCM for Industrial Ethernet S7 - Manual (Page 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
FC 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.