Technical data of CPU 31x
7.6 CPU 317-2 DP
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
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Technical Data
S7 signaling functions
Number of stations that can be logged on for
signaling functions
32
(depends on the number of connections
configured for PG / OP and S7 basic
communication)
Process diagnostics messages Yes
• Simultaneously enabled interrupt S blocks
60
Testing and commissioning functions
Status/control variables Yes
• Variables
Inputs, outputs, memory bits, DBs, timers,
counters
• Number of variables
– Of those as status variable
– Of those as control variable
30
Maximum 30
Max. 14
Forcing
• Variables
Inputs/Outputs
• Number of variables
Maximum 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
8
• Number of GD packets
– Sending stations
– Receiving stations
Maximum 8
Maximum 8
Maximum 8
• Length 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)
76 bytes (for X_PUT or X_GET as the server)
S7 communication Yes
• As server
Yes
• as client
Yes (via CP and loadable FBs)
• User data per job
– Consistent data
Max. 180 bytes (with PUT/GET)
160 byte (as the server)
S5-compatible communication Yes (via CP and loadable FCs)
Number of connections 32
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