SIEMENS SIPLUS S7-300 CPU 312C

SIPLUS S7-300 CPU 312C Overview

  • The compact CPU with integral digital inputs/outputs
  • For small applications with increased processing performance requirements
  • With technological functions

Micro Memory Card required for operation of CPU.

Product No. / Product Description Listprice / Your price
6AG1312-5BF04-2AY0
SIPLUS S7-300 CPU 312C with conformal coating according to EN 50155 T1 Cat 1 Cl A/ B based on 6ES7312-5BF04-0AB0 . Compact CPU with MPI, 10 DI/6 DQ, 2 high-speed counters (10 kHz) Integr. power supply 24 V DC, work memory 64 KB, Front connector (1x 40-pole) and Micro Memory Card required
6AG1312-5BF04-7AB0
SIPLUS S7-300 CPU 312C for medial exposure -25…+70 °C based on 6ES7312-5BF04-0AB0 . Compact CPU with MPI, 10 DI/6 DQ, 2 high-speed counters (10 kHz) Integr. power supply 24 V DC, work memory 64 KB, Front connector (1x 40-pole) and Micro Memory Card required
SIPLUS S7-300 CPU 312C

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SIEMENS SIPLUS S7-300 CPU 312C

SIPLUS S7-300 CPU 312C Application

The CPU 312C is the compact CPU for small-scale applications with demanding requirements regarding processing speed. Integrated digital inputs/outputs support direct interfacing with the process.

Other possible uses result from the integrated technological functions:

  • Counting
  • Frequency measurement
  • Period measurement
  • Pulse-width modulation

SIPLUS S7-300 CPU 312C Design

The CPU 312C is equipped with the following:

  • Microprocessor;
    the processor achieves a processing time of 100 ns per binary instruction.
  • Extensive memory;
    64 KB high-speed work memory (equals approx. 21 K instructions) for program components relevant to execution offers sufficient space for user programs;
    SIMATIC Micro Memory Cards (max. 8 MB) as load memory for the program also allow the project to be stored in the CPU (complete with symbols and comments).
  • Flexible expansion capability
    max. 8 modules, (1-tier installation)
  • MPI multi-point interface
    The integrated MPI interface can establish as many as 6 connections simultaneously to S7-300/400 or to programming device, PC, OP. Among these connections, one is always reserved for programming devices and another for OPs. The MPI makes it possible to set up a simple network with a maximum of 16 CPUs via “global data communication”.
  • Integrated inputs/outputs
    10 digital inputs (all for alarm processing) and 6 digital outputs are available to connect the process signals to the CPU 312C.

SIPLUS S7-300 CPU 312C Function

  • Password protection;
    a password concept protects the user program from unauthorized access.
  • Block encryption;
    the functions (FCs) and function blocks (FBs) can be stored in the CPU in encrypted form by means of S7-Block Privacy to protect the know-how of the application.
  • Diagnostics buffer;
    the last 500 error and interrupt events are stored in a buffer for diagnostic purposes, of which 100 are stored retentively.
  • Maintenance-free data backup;
    retentive data is automatically backed up by the CPU if the voltage is interrupted and is available unchanged after the voltage has been reconnected.

Technical specifications

Article number

6AG1312-5BF04-2AY0

6AG1312-5BF04-7AB0

SIPLUS S7-300 CPU312C EN50155

SIPLUS S7-300 CPU312C

General information

HW functional status

01

01

Firmware version

V3.3

V3.3

Engineering with

  • ● Programming package

STEP 7 V5.5 + SP1 or higher or STEP 7 V5.3 + SP2 or higher with HSP 203

STEP 7 V5.5 + SP1 or higher or STEP 7 V5.3 + SP2 or higher with HSP 203

Supply voltage

Rated value (DC)

  • ● 24 V DC

Yes; A power supply according to EN 50155 shall be used

Yes

permissible range, lower limit (DC)

19.2 V

19.2 V

permissible range, upper limit (DC)

28.8 V

28.8 V

external protection for power supply lines (recommendation)

Miniature circuit breaker, type C; min. 2 A; miniature circuit breaker type B, min. 4 A

Miniature circuit breaker, type C; min. 2 A; miniature circuit breaker type B, min. 4 A

Mains buffering

  • ● Mains/voltage failure stored energy time

5 ms

5 ms

  • ● Repeat rate, min.

1 s

1 s

Digital outputs

  • — Rated value (DC)

24 V

24 V

  • — Reverse polarity protection

No

No

Input current

Current consumption (rated value)

570 mA

570 mA

Current consumption (in no-load operation), typ.

90 mA

90 mA

Inrush current, typ.

5 A

5 A

I²t

0.7 A²·s

0.7 A²·s

Digital outputs

  • ● from load voltage L+, max.

25 mA

25 mA

Power loss

Power loss, typ.

8 W

8 W

Memory

Work memory

  • ● integrated

64 kbyte

64 kbyte

  • ● expandable

No

No

  • ● Size of retentive memory for retentive data blocks

64 kbyte

64 kbyte

Load memory

  • ● Plug-in (MMC)

Yes

Yes

  • ● Plug-in (MMC), max.

8 Mbyte

8 Mbyte

  • ● Data management on MMC (after last programming), min.

10 y

10 y

Backup

  • ● present

Yes; Guaranteed by MMC (maintenance-free)

Yes; Guaranteed by MMC (maintenance-free)

  • ● without battery

Yes; Program and data

Yes; Program and data

CPU processing times

for bit operations, typ.

0.1 µs

0.1 µs

for word operations, typ.

0.24 µs

0.24 µs

for fixed point arithmetic, typ.

0.32 µs

0.32 µs

for floating point arithmetic, typ.

1.1 µs

1.1 µs

CPU-blocks

Number of blocks (total)

1 024; (DBs, FCs, FBs); the maximum number of loadable blocks can be reduced by the MMC used.

1 024; (DBs, FCs, FBs); the maximum number of loadable blocks can be reduced by the MMC used.

DB

  • ● Number, max.

1 024; Number range: 1 to 16000

1 024; Number range: 1 to 16000

  • ● Size, max.

64 kbyte

64 kbyte

FB

  • ● Number, max.

1 024; Number range: 0 to 7999

1 024; Number range: 0 to 7999

  • ● Size, max.

64 kbyte

64 kbyte

FC

  • ● Number, max.

1 024; Number range: 0 to 7999

1 024; Number range: 0 to 7999

  • ● Size, max.

64 kbyte

64 kbyte

OB

  • ● Description

see instruction list

see instruction list

  • ● Size, max.

64 kbyte

64 kbyte

  • ● Number of free cycle OBs

1; OB 1

1; OB 1

  • ● Number of time alarm OBs

1; OB 10

1; OB 10

  • ● Number of delay alarm OBs

2; OB 20, 21

2; OB 20, 21

  • ● Number of cyclic interrupt OBs

4; OB 32, 33, 34, 35

4; OB 32, 33, 34, 35

  • ● Number of process alarm OBs

1; OB 40

1; OB 40

  • ● Number of startup OBs

1; OB 100

1; OB 100

  • ● Number of asynchronous error OBs

4; OB 80, 82, 85, 87

4; OB 80, 82, 85, 87

  • ● Number of synchronous error OBs

2; OB 121, 122

2; OB 121, 122

Nesting depth

  • ● per priority class

16

16

  • ● additional within an error OB

4

4

Counters, timers and their retentivity

S7 counter

  • ● Number

256

256

Retentivity

  • — adjustable

Yes

Yes

  • — lower limit

0

0

  • — upper limit

255

255

  • — preset

Z 0 to Z 7

Z 0 to Z 7

Counting range

  • — lower limit

0

0

  • — upper limit

999

999

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