Interfaces For Point-To-Point Connections; Number Of Connections - Siemens SIMATIC S7-300 Manual For Migrating

4 Hardware Migration
4.4.7

Interfaces for point-to-point connections

Table 4-13 Communication modules for point-to-point connections
Interface
RS 232
RS 422
RS 485
TTY
4.4.8

Number of connections

The quantity framework of the S7-1500 was expanded in comparison to S7-300. It
is now possible to establish several connections via the internal interfaces of the
CPU.
Table 4-14 Number of connections
S7-300 (selection)
315-2PN/DP
317-2PN/DP
319-3PN/DP
S7-400 (selection)
412-2PN
414-3PN/DP
416-3PN/DP
S7-1500
1511(C/F/T)
1512C
1513(F)
1515(F/T)
1516(F)
1517(F/T)
1518(F)
The "CPU-CPU Communication" compendium gives you an overview.
https://support.industry.siemens.com/cs/ww/en/view/78028908
Note Communication will be discussed in greater detail in a later version of this guide.
Migration S7-300/S7-400 nach S7-1500
Entry ID: 109478811, V1.1,
S7-300/S7-400
CP 340, CP 341, CP 441
CP 340/341, CP 440/441
CP340/341, CP 440/441
CP 340/341, CP 441
Device
05/2017
S7-1500
CM PtP RS 232 BA/HF
CM PtP RS 422/485 BA/HF
CM PtP RS 422/485 BA/HF
---
Number of connection
internal interfaces (total)
16
16
32
48
64
96
64
88
88
108
128
160
192
26