Siemens SIMATIC S7-300 Module data Technical Data

Technical data of CPU 31x
7.2 CPU 312
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
7-5
Technical data
Number of function modules and communication
processors you can operate
• FM
Max. 8
• CP (PtP)
Max. 8
• CP (LAN)
Max. 4
Time-of-day
Real-time clock Yes (SW clock)
• Buffered
No
• Accuracy
Deviation per day < 15 s
• Behavior of the realtime clock after POWER
ON
The clock keeps running, continuing at the time-
of-day it had when power was switched off.
Operating hours counter 1
• Number
0
• Value range
2
31
(if SFC 101 is used)
• Granularity
1 hour
• Retentive
Yes; must be manually restarted after every
restart
Clock synchronization Yes
• In the PLC
Master
• On MPI
Master/slave
S7 signaling functions
Number of stations that can be logged on for
signaling functions
6
(depends on the number of connections
configured for PG / OP and S7 basic
communication)
Process diagnostics messages Yes
• Simultaneously enabled interrupt S blocks
Max. 20
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
30
14
Forcing 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

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)