SIMATIC S7-300 – CPU 312 – Siemens PLC

$ 419.46

SKU: 6ES7312-1AE14-0AB0

CPU 312, the smallest S7-300 CPU. This is ideally suited to simple applications in which the advantages of TIA such as integrated communication, data management and diagnostics can however be utilized. Networking is possible using MPI or by means of CPs, the standard mode of application is, however, non-networked operation. The I/O is normally connected in a centralized configuration.

Siemens PLC S7-300 Product Specifications:

Article number 6ES7312-1AE14-0AB0
CPU312, 32KB
General information
HW functional status 1
Firmware version V3.3
Engineering with
● Programming package STEP 7 V5.5 + SP1 or higher or STEP 7 V5.2 + SP1 or higher with HSP 218
Supply voltage
Rated value (DC) 24 V
permissible range, lower limit (DC) 19.2 V
permissible range, upper limit (DC) 28.8 V
external protection for power supply lines (recommendation) 2 A min.
Mains buffering
● Mains/voltage failure stored energy time 5 ms
● Repeat rate, min. 1 s
Input current
Current consumption (rated value) 650 mA
Current consumption (in no-load operation), typ. 140 mA
Inrush current, typ. 3.5 A
I²t 1 A²·s
Power loss
Power loss, typ. 4 W
Memory
Work memory
● integrated 32 kbyte
● expandable No
Load memory
● Plug-in (MMC) Yes
● Plug-in (MMC), max. 8 Mbyte
● Data management on MMC (after last programming), min. 10 y
Backup
● present Yes; Guaranteed by MMC (maintenance-free)
● without battery Yes; Program and data
CPU processing times
for bit operations, typ. 0.1 µs
for word operations, typ. 0.24 µs
for fixed point arithmetic, typ. 0.32 µs
for floating point arithmetic, typ. 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.
DB
● Number, max. 1 024; Number range: 1 to 16000
● Size, max. 32 kbyte
FB
● Number, max. 1 024; Number range: 0 to 7999
● Size, max. 32 kbyte
FC
● Number, max. 1 024; Number range: 0 to 7999
● Size, max. 32 kbyte
OB
● Number, max. see instruction list
● Size, max. 32 kbyte
● Number of free cycle OBs 1; OB 1
● Number of time alarm OBs 1; OB 10
● Number of delay alarm OBs 2; OB 20, 21
● Number of cyclic interrupt OBs 4; OB 32, 33, 34, 35
● Number of process alarm OBs 1; OB 40
● Number of startup OBs 1; OB 100
● Number of asynchronous error OBs 4; OB 80, 82, 85, 87
● Number of synchronous error OBs 2; OB 121, 122
Nesting depth
● per priority class 16
● additional within an error OB 4
Counters, timers and their retentivity
S7 counter
● Number 256
Retentivity
— adjustable Yes
— lower limit 0
— upper limit 255
— preset Z 0 to Z 7
Counting range
— lower limit 0
— upper limit 999
IEC counter
● present Yes
● Type SFB
● Number Unlimited (limited only by RAM capacity)
S7 times
● Number 256
Retentivity
— adjustable Yes
— lower limit 0
— upper limit 255
— preset No retentivity
Time range
— lower limit 10 ms
— upper limit 9 990 s
IEC timer
● present Yes
● Type SFB
● Number Unlimited (limited only by RAM capacity)
Data areas and their retentivity
Retentive data area (incl. timers, counters, flags), max. 32 kbyte
Flag
● Size, max. 256 byte
● Retentivity available Yes; MB 0 to MB 255
● Retentivity preset MB 0 to MB 15
● Number of clock memories 8; 1 memory byte
Data blocks
● Retentivity adjustable Yes; via non-retain property on DB
● Retentivity preset Yes
Local data
● per priority class, max. 32 kbyte; Max. 2 KB per block
Address area
I/O address area
● Inputs 1 024 byte
● Outputs 1 024 byte
Process image
● Inputs 1 024 byte
● Outputs 1 024 byte
● Inputs, adjustable 1 024 byte
● Outputs, adjustable 1 024 byte
● Inputs, default 128 byte
● Outputs, default 128 byte
Digital channels
● Inputs 256
— of which central 256
● Outputs 256
— of which central 256
Analog channels
● Inputs 64
— of which central 64
● Outputs 64
— of which central 64
Hardware configuration
Number of expansion units, max. 0
Number of DP masters
● integrated 0
● via CP 4
Number of operable FMs and CPs (recommended)
● FM 8
● CP, PtP 8
● CP, LAN 4
Rack
● Racks, max. 1
● Modules per rack, max. 8
Time of day
Clock
● Software clock Yes
● retentive and synchronizable No; Buffered: No, Can be synchronized: Yes
● Deviation per day, max. 10 s; Typ.: 2 s
● Behavior of the clock following POWER-ON the clock continues at the time of day it had when power was switched off
Operating hours counter
● Number 1
● Number/Number range 0
● Range of values 0 to 2^31 hours (when using SFC 101)
● Granularity 1 h
● retentive Yes; Must be restarted at each restart
Clock synchronization
● supported Yes
● to MPI, master Yes
● to MPI, slave Yes
● in AS, master Yes
● in AS, slave No
Digital inputs
Number of digital inputs 0
Digital outputs
Number of digital outputs 0
Analog inputs
Number of analog inputs 0
Analog outputs
Number of analog outputs 0
Interfaces
Number of industrial Ethernet interfaces 0
Number of PROFINET interfaces 0
Number of RS 485 interfaces 1; MPI
Number of RS 422 interfaces 0
1. Interface
Interface type Integrated RS 485 interface
Isolated No
Interface types
● RS 485 Yes
● Output current of the interface, max. 200 mA
Protocols
● MPI Yes
● PROFIBUS DP master No
● PROFIBUS DP slave No
● Point-to-point connection No
MPI
● Transmission rate, max. 187.5 kbit/s
Services
— PG/OP communication Yes
— Routing No
— Global data communication Yes
— S7 basic communication Yes
— S7 communication Yes; Only server, configured on one side
— S7 communication, as client No
— S7 communication, as server Yes
Protocols
PROFIsafe No
communication functions / header
PG/OP communication Yes
Data record routing No
Global data communication
● supported Yes
● Number of GD loops, max. 8
● Number of GD packets, max. 8
● Number of GD packets, transmitter, max. 8
● Number of GD packets, receiver, max. 8
● Size of GD packets, max. 22 byte
● Size of GD packet (of which consistent), max. 22 byte
S7 basic communication
● supported Yes
● User data per job, max. 76 byte
● User data per job (of which consistent), max. 76 byte; 76 bytes (with X_SEND or X_RCV); 64 bytes (with X_PUT or X_GET as server)
S7 communication
● supported Yes
● as server Yes
● as client Yes; Via CP and loadable FB
● User data per job, max. 180 byte; With PUT/GET
● User data per job (of which consistent), max. 240 byte; as server
S5 compatible communication
● supported Yes; via CP and loadable FC
Number of connections
● overall 6
● usable for PG communication 5
— reserved for PG communication 1
— adjustable for PG communication, min. 1
— adjustable for PG communication, max. 5
● usable for OP communication 5
— reserved for OP communication 1
— adjustable for OP communication, min. 1
— adjustable for OP communication, max. 5
● usable for S7 basic communication 2
— reserved for S7 basic communication 0
— adjustable for S7 basic communication, min. 0
— adjustable for S7 basic communication, max. 2
S7 message functions
Number of login stations for message functions, max. 6; Depending on the configured connections for PG/OP and S7 basic communication
Process diagnostic messages Yes
simultaneously active Alarm-S blocks, max. 300
Test commissioning functions
Status block Yes; Up to 2 simultaneously
Single step Yes
Number of breakpoints 4
Status/control
● Status/control variable Yes
● Variables Inputs, outputs, memory bits, DB, times, counters
● Number of variables, max. 30
— of which status variables, max. 30
— of which control variables, max. 14
Forcing
● Forcing Yes
● Forcing, variables Inputs, outputs
● Number of variables, max. 10
Diagnostic buffer
● present Yes
● Number of entries, max. 500
— adjustable No
— of which powerfail-proof 100; Only the last 100 entries are retained
● Number of entries readable in RUN, max. 499
— adjustable Yes; From 10 to 499
— preset 10
Service data
● can be read out Yes
Ambient conditions
Ambient temperature during operation
● min. 0 °C
● max. 60 °C
configuration / header
Configuration software
● STEP 7 Yes; V5.2 SP1 or higher with HW update
configuration / programming / header
● Command set see instruction list
● Nesting levels 8
● System functions (SFC) see instruction list
● System function blocks (SFB) see instruction list
Programming language
— LAD Yes
— FBD Yes
— STL Yes
— SCL Yes
— GRAPH Yes
— HiGraph® Yes
Know-how protection
● User program protection/password protection Yes
● Block encryption Yes; With S7 block Privacy
Dimensions
Width 40 mm
Height 125 mm
Depth 130 mm
Weights
Weight, approx. 270 g
Weight 0.305 kg
Dimensions 13.1 × 15.1 × 5.1 cm

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