Siemens SIMATIC NET S7-1200 Operating Instructions Manual page 14

Application and properties
1.3 Performance data
• Data areas of the DP master
Size of the DP data areas of the DP master: Max. 1024 bytes
– Input area of the DP master in total: Max. 512 bytes
– Output area of the DP master in total: Max. 512 bytes
• Data areas of the DP slaves
Maximum size of the DP data areas of the DP slaves
– Input area per DP slave: Max. 244 bytes
– Output area per DP slave: Max. 244 bytes
– Diagnostics data area per DP slave: Max. 244 bytes
Characteristic data of S7 communication
• Number of possible connections for S7 communication in total: 8
Of which maximum:
– Configured connections for PUT/GET services: 6
– PG/OP connections: 3
• User data per frame
– PUT: Max. 209 bytes
– GET: Max. 222 bytes
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Operating Instructions, 01/2023, C79000-G8976-C246-06
SIMATIC CM 1243-5