Description
2.4 Number of MOBY channels which can be connected
FC 45
Function manual, Release 03/2006 , J31069-D0167-U001-A2-7618
2-7
2.4
2.4
Number of MOBY channels which can be connected
Each MOBY channel occupies 1 word in the input and output area of a SIMATIC S7. The
maximum number of MOBY modules supported by SIMATIC can always be operated. The
following table provides an overview.
Table 2-3
Number of MOBY channels
S7 CPU type
5
315-2 DP
316-2 DP; 318-2 DP
416; 417; CP 443-5 Ext
Max. no. of
ASMs
Max. no. of
write/read
devices
(channels)
Max. no. of
ASMs
Max. no. of
write/read
devices
(channels)
Max. no. of
ASMs
Max. no. of
write/read
devices
(channels)
ASM 475 (centralized)
2
32
64
32
64
–
–
ASM 475 (distributed via ET
200M)
3
64 x 8
1024
123 x 8
1968
123 x 8
1968
ASM 473 (distributed via ET
200X)
4
64 x 7
448
123 x 7
861
123 x 7
861
ASM 452
64
64/128
1
123
123/246
1
123
123/246
1
ASM 454, 854
64
256
123
492
123
492
ASM 754
64
64/256
1
123
123/492
1
123
123/492
1
1) No. of channels in multiplex mode (only static operation possible)
2) The centralized configuration can contain up to three expansion racks. A DP connection is not necessary in this variant.
3) In the distributed configuration, up to eight MOBY modules (ASM 475) can be installed in each ET 200M.
4) Up to seven ASM 473 modules can be installed in a distributed ET 200X I/O.
5) The CPU types specified here may be incomplete, as the range of CPUs and associated functions is expanded
continuously.