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S7-300 Automation System CPU Specifications: CPU 31xC and CPU 31x
6-10 A5E00105475-03
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Force Yes
• Variable Inputs, outputs
• Number of variables max. 10
Status block Yes
Single sequence Yes
Breakpoint 2
Diagnostic buffer Yes
• Number of entries (not configurable) max. 100
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PG/OP communication Yes
Global data communication Yes
• Number of GD circuits 4
• Number of GD packets max. 4
Sending stations max. 4
Receiving stations max. 4
• Size of GD packets max. 22 bytes
Consistent data 22 bytes
S7-based communication Yes
• User data per job max. 76 bytes
Consistent data 76 bytes (for X_SEND or X_RCV)
64 bytes (for X_PUT or X_GET as the
server)
S7 communication
• as server Yes
• User data per job max. 180 bytes (with PUT/GET)
Consistent data 64 bytes
S5-compatible communication Yes (via CP and loadable FCs)
Number of connections max. 6
usable for
• PG communication max. 5
Reserved (Default) 1
Configurable from 1 to 5
• OP communication max. 5
Reserved (Default) 1
Configurable from 1 to 5
• S7-based communication max. 2
Reserved (Default) 2
Configurable from 0 to 2
Routing No
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