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COMPARISON OF CPU'S in Siemens PLC


                                                      















CPU's


CPU312IFM

CPU313

CPU314IFM

CPU314
Mem Statement/Bytes
2K/6KB
4K/12KB
8K/24KB
16K/48KB
Memory Cards
-
512KB FEPROM
-
512KB FEPROM
Processing Time 1024 Statements
0.6 ms
0.6 ms
0.3 ms
0.3 ms
DI & DO Max
256
256
1024
1024
AI & AO Max
64
64
256
256
Rack Configuration
1-Tier
1-Tier
4-Tier
4-Tier
Expansion Modules Max
8
8
31
31
Bit Memories
1024
2048
2048
2048
Counters
32
32
64
64
Timers
64
64
72
128
MPI Interface
187.5 Kbit/s
Max 32 Nodes
Yes
Yes
Yes
Yes
Integrated functions+Interfaces
10DI/6DQ onboard. int. functions:Counters/Freq. Measuremensts
-
20DI/16DQ ,4AI,1AO onboard. int. functions:Counters/Freq. Measuremensts/Positioning PID Control
-

















CPU's


CPU315

CPU315-2DP

CPU316-2DP

CPU318-2
Mem Statement/Bytes
16K/48KB
16K/48KB
42K/128KB
256KB
Memory Cards
512KB FEPROM
512KB FEPROM
4MB FEPROM
4MB FEPROM
Processing Time 1024 Statements
0.3 ms
0.3 ms
0.3 ms
0.1 ms
DI & DO Max
1024
2048
4096
16384
AI & AO Max
256
256
256
1024
Rack Configuration
4-Tier
4-Tier
4-Tier
4-Tier
Expansion Modules Max
32
32
32
32
Bit Memories
2048
2048
2048
8192
Counters
64
64
64
512
Timers
128
128
128
512
MPI Interface
187.5 Kbit/s
Max 32 Nodes
Yes
Yes
Yes
Upto 12Mbaud
Integrated functions+Interfaces
-
PROFIBUS-DP Master/Slave (64 DP stations,12Mbaud)

PROFIBUS-DP Master/Slave (64 DP stations,12Mbaud)
PROFIBUS-DP Master/Slave (125 DP stations,12Mbaud)

* 1 K statements correspond to approx. 3Kbytes of user memory.



THE DIFFERENT TYPES OF MODULES AVAILABLE ARE

1.     SIGNAL MODULES  -  FOR DIGITAL AND ANALOG SIGNALS







DIGITAL INPUTS


DIGITAL OUTPUTS
·         16 X 24 VDC
·         8 X 120 / 230 VAC
·         16 X 120 V AC
·         32 X 24 V DC

·         16 x 24 VDC ,0.5A
·         8 X 24 VDC ,2A
·         8 X 120 / 230 VAC, 2A
·         16 X 120 VAC, 1A
·         32 X 24 V DC, 0.5A


RELAY OUTPUTS


DI/DO MODULES
·         8 X Relay 30 VDC ,0.5A
·         8 X Relay 250 VAC ,3A
·         16 X Relay 30VDC,0.5A
·         16 X Relay 120VAC, 2.5A

·         8DI/8DO X 24VDC 0.5A






ANALOG INPUTS PARAMETERIZABLE


ANALOG OUTPUTS PARAMETERIZABLE
·         8 Analog Inputs/ 2 Analog Inputs
·         +/- 10V , +/- 50 mV, +/-1 V, +/-20 Ma, 4 to 20mA, Pt100, Thermocouple

·         4 Analog Outputs/ 2 Analog Outputs
·         +/-10V, +/-50mV, +/-1 V, +/-20 mV, 4 to 20 mA

 


2.     FUNCTION MODULES 
·         High Speed Counter Modules - Upto 100 KHz range
·         Positioning Modules - For position control, Stepper Motor Control, Cam Controllers

All function modules are enclosed and can be installed in any slot.

3.     COMMUNICATION PROCESSORS - FOR DATA EXCHANGE WITH PRINTERS,COMPUTERS, SIMATIC SYSTEMS
·         CP340 - Point to Point Communication for the serial link with RS232, 3964R and any ASCII protocol

4.     INTERFACE MODULES - FOR MULTI TIER CONFIGURATION
·         For Central Controller Expansion
·         For Expansion Unit Connection

5.     POWER SUPPLY MODULES - FOR 24 VDC LOAD CIRCUITS WITH DIFFERENT RATINGS.


MPI - MULTI POINT INTERFACE FOR COMMUNICATION

·         MPI  INTEGRATED IN CPU
·         DATA EXCHANGE RATE : 187.5 Kbits / s
·         SIMULTANEOUS COMMUNICATION  WITH PG/PC/OP(OPERATOR PANEL) AND FURTHER PLCS REQUIRING NO ADDITIONAL HARDWARE
·         UPTO 32 NODES CAN BE CONNECTED

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