Siemens CPU 312 IFM User Manual

CPUs
1-38
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
Configuration
Rack 1
Modules per module rack max. 8
Number of DP masters
 integral No
 via CP 1
S7 message functions
Simultaneously active
Alarm-S blocks
None
Time
Real-time clock Yes
 Backed-up No
 Accuracy See Section 1.1.6
Operating hours counter 1
 Number 0
 Value range 0 to 32767 hours
 Selectivity 1 hour
 Retentive Yes
Clock synchronisation Yes
 On PLC Master
 On MPI Master/Slave
Testing and commissioning functions
Status/Modify Variables Yes
 Variable Inputs, outputs, flags, DBs,
timers, counters
 Number
– Monitor Variables
– Modify Variables
max. 30
max. 14
Force Yes
 Variable Inputs, outputs
 Number max. 10
Monitor block Yes
Single sequence
Breakpoint
Yes
2
Diagnostic buffer Yes
 Number of entries
(non-alterable)
100
Communication functions
PD/OP communication Yes
Global data communication Yes
 Number of GD packets
– Sender 1
– Receiver 1
 Size of GD packets max. 22 bytes
– Number of which
consistent
8 bytes
S7 basic communication Yes
 User data per job max. 76 bytes
– Number of which
consistent
32 bytes for X/I_PUT/_GET;
76 bytes for
X_SEND/_RCV
S7 communication Yes (server)
 User data per job max. 160 bytes
– Number of which
consistent
32 bytes
S7-compatible
communication
No
Standard communication No
Number of connection
resources
8 for PD/OP/S7 basic/S7
communication
 Reservation for
– PD communication
User-definable
Default
max. 7
from 1 to 7
1
– OP communication
User-definable
Default
max. 7
from 1 to 7
1
– S7 basic
communication
User-definable
Default
max. 4
from 0 to 4
4
Interfaces
1. Interface
Functionality
 MPI Yes
 DP Master No
 DP Slave No
 Galvanically isolated No

Siemens CPU 312 IFM Specifications

General

Brand	Siemens
Model	CPU 312 IFM
Category	Controller
Language	English