Siemens CPU 31 Series Technical Data Manual page 118

Technical data of CPU 31xC
6.2 CPU 312C
Technical data
Communication functions
PG/OP communication
Global data communication
•
•
•
S7 basic communication
•
•
S7 communication
•
•
S5-compatible communication
Number of connections
can be used for
•
•
•
Routing
Interfaces
1st interface
Type of interface
Physics
electrically isolated
Interface power supply
(15 to 30 VDC)
Functionality
•
•
•
6-6
Number of GD circuits
Number of GD packets
Sending stations
–
Receiving stations
–
Length of GD packets
Consistent data
–
User data per job
Consistent data
As server
User data per job
Consistent data
–
PG communication
Reserved (default)
–
Configurable
–
OP communication
Reserved (default)
–
Configurable
–
S7-based communication
Reserved (default)
–
Configurable
–
MPI
PROFIBUS DP
Point-to-point communication
Yes
Yes
4
Max. 4
Max. 4
Max. 4
Max. 22 bytes
22 bytes
Yes
Max. 76 bytes
76 bytes (for X_SEND or X_RCV)
64 bytes (for X_PUT or X_GET as the server)
Yes
Max. 180 bytes (with PUT/GET)
64 bytes
Yes (via CP and loadable FCs)
Max. 6
Max. 5
1
From 1 to 5
Max. 5
1
From 1 to 5
Max. 2
2
from 0 to 2
No
Integrated RS485 interface
RS 485
No
Max. 200 mA
Yes
No
No
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06