Siemens CPU 312 - Page 123

Technical data of CPU 31xC
6.3 CPU 313C
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
6-11
Technical data
Test and startup functions
Status/control variables Yes
• Variables
Inputs, outputs, memories, DBs, timers, counters
• Number of variables
– of those as status variable
– of those as control variable
Max. 30
Max. 30
Max. 14
Force Yes
• Variables
Inputs, outputs
• Number of variables
Max. 10
Block status Yes
Single-step Yes
Breakpoints 2
Diagnostic buffer Yes
• Number of entries (not configurable)
Max. 100
Communication functions
PG/OP communication Yes
Global data communication Yes
• Number of GD circuits
4
• Number of GD packets
– Sender
– Receiver
Max. 4
Max. 4
Max. 4
• Size of GD packets
– Consistent data
Max. 22 bytes
22 bytes
S7 basic communication Yes
• User data per job
– Consistent data
Max. 76 bytes
76 bytes (for X_SEND or X_RCV)
64 bytes (for X_PUT or X_GET as the server)
S7 communication
• As server
Yes
• As client
Yes (via CP and loadable FBs)
• User data per job
– Consistent data
Max. 180 bytes (with PUT/GET)
64 bytes
S5compatible communication Yes (via CP and loadable FCs)
Number of connections Max. 8
Can be used for
• PG communication
– Reserved (default)
– Configurable
Max. 7
1
From 1 to 7
• OP communication
– Reserved (default)
– Configurable
Max. 7
1
From 1 to 7