Siemens SIMATIC NET S7-400 - Page 23

Performance data
2.3 SEND/RECEIVE interface
CP 443-1 (EX30)
Manual, 03/2019, C79000-G8976-C255-05
23
The following CPU resources are required:
● Per SEND job short (AG_SEND) or long (AG_LSEND): 1 resource
● Per RECEIVE job short (AG_RECV): 1 resource
● Per RECEIVE job long (AG_LRECV): 2 resources
● Per SPEED SEND/RECV job (AG_SSEND, AG_SRECV): 0 resources
Limitation by the CP
A maximum of 64 SEND/RECEIVE connections can be operated by the CP.
At an assignment of 1 CP per CPU, the maximum number of SEND/RECEIVE calls that can
be used at one time is limited as follows:
● SEND calls short (AG_SEND) or long (AG_LSEND): max. 32
*)
/ 12
**)
per CPU
● RECEIVE calls short (AG_RECV): max. 64
*)
/ 24
**)
per CPU
● RECEIVE calls long (AG_LRECV): variable
***)
*)
The higher values apply to the CPU 416 and CPU 417.
**)
The lower values apply to the CPU 412 and CPU 414.
***)
The number of AG_LRECV program blocks that can be used at the same time depends
on the number of SEND calls active at the same time (see tables below).
Table 2- 1 Dependency of the maximum number of RECEIVE calls long (AG_LRECV FC60) used at the same time on
the number of SEND calls (CPU 412/414)
Number of simultaneous
SEND calls
0
1
2
3,
4
5
6
7
8,
9
10
11
12
Max. number of simultane-
ous FC60s per CPU 412/414
19 18 17 16 15 14 13 12 11 10 9
Table 2- 2 Dependency of the maximum number of RECEIVE calls long (AG_LRECV FC60) used at the same time on
the number of SEND calls (CPU 416/417)
Number of simultaneous
SEND calls
0
1
2
3,
4
5
6
7
8,
9
10
11
12
13,
14
15
16
Max. number of simulta-
neous FC60s per
CPU 416/417/41x-H
51 50 49 48 47 46 45 44 43 42 41 40 39 38
Number of simultaneous
SEND calls
17
18,
19
20
21
22
23,
24
25
26
27
28,
29
30
31
32
Max. number of simulta-
neous FC60s per
CPU 416/417/41x-H
37 36 35 34 33 32 31 30 29 28 27 26 25