Siemens Simatic S7-300 CPU 31xC and CPU 31x S7-300 - Manual (Page 202)

Technical data of CPU 31x
7.7 CPU 317-2 PN/DP
CPU 31xC and CPU 31x, Technical data
7-36
Manual, Edition 08/2004, A5E00105475-05
Technical data
•
Number of variables
–
Of those as status variable
– Of those as control variable
30
Max. 30
Max. 14
Forcing
•
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
Open IE communication via TCP/IP
Yes (via integrated PROFINET interface and
loadable FBs, max. 8 connections)
PG/OP communication
Global data communication Yes
• Number of GD circuits 8
• Number of GD packets
–
Sending stations
– Receiving stations
Max. 8
Max. 8
Max. 8
• Length of GD packets
–
Consistent data
max. 22 bytes
22 bytes
S7 basic communication Yes
• User data per request
–
Consistent data
max. 76 bytes
76 bytes
S7 communication Yes
• As server Yes
• as client Yes (via integrated PN interface and loadable
FBs, or even via CP and loadable FBs)
• User data per request
–
Consistent data
See the STEP 7 Online Help, Common
parameters of SFBs/FBs and SFC/FC of the S7
communication)
S5-compatible communication Yes (via CP and loadable FCs)
Number of connections 32
can be used for
• PG communication
–
Reserved (default)
– Configurable
Max. 31
1
1 to 31
• OP communication
–
Reserved (default)
– Configurable
Max. 31
1
1 to 31
• S7-based communication
–
Reserved (default)
– Configurable
Max. 30
0
0 to 30