SIMATIC S7-300 – CPU 312C – Siemens PLC

$ 527.87

SKU: 6ES7312-5BF04-0AB0

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.

Siemens PLC S7-300 Product Specifications:

Article number 6ES7312-5BF04-0AB0
CPU312C, 10DI/6DO, 64 KB
General information
HW functional status 1
Firmware version V3.3
Engineering with
● Programming package STEP 7 V5.5 + SP1 or higher or STEP 7 V5.3 + SP2 or higher with HSP 203
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) 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
● Repeat rate, min. 1 s
Load voltage L+
Digital outputs
— Rated value (DC) 24 V
— Reverse polarity protection No
Input current
Current consumption (rated value) 570 mA
Current consumption (in no-load operation), typ. 90 mA
Inrush current, typ. 5 A
I²t 0.7 A²·s
Digital outputs
● from load voltage L+, max. 25 mA
Power loss
Power loss, typ. 8 W
Memory
Work memory
● integrated 64 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. 64 kbyte
FB
● Number, max. 1 024; Number range: 0 to 7999
● Size, max. 64 kbyte
FC
● Number, max. 1 024; Number range: 0 to 7999
● Size, max. 64 kbyte
OB
● Number, max. see instruction list
● Size, max. 64 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. 64 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. 2048 bytes per block
Address area
I/O address area
● Inputs 1 024 byte
● Outputs 1 024 byte
of which distributed
— Inputs none
— Outputs none
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
Default addresses of the integrated channels
— Digital inputs 124.0 to 125.1
— Digital outputs 124.0 to 124.5
Digital channels
● Inputs 266
— of which central 266
● Outputs 262
— of which central 262
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 none
● 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 10
● of which inputs usable for technological functions 8
integrated channels (DI) 10
Input characteristic curve in accordance with IEC 61131, type 1 Yes
Number of simultaneously controllable inputs
horizontal installation
— up to 40 °C, max. 10
— up to 60 °C, max. 5
vertical installation
— up to 40 °C, max. 5
Input voltage
● Rated value (DC) 24 V
● for signal “0” -3 to +5V
● for signal “1” +15 to +30 V
Input current
● for signal “1”, typ. 8 mA
Input delay (for rated value of input voltage)
for standard inputs
— parameterizable Yes; 0.1 / 0.3 / 3 / 15 ms (You can reconfigure the input delay of the standard inputs during program runtime. Please note that under certain circumstances your newly set filter time may not be effective until the next filter cycle.)
— Rated value 3 ms
for technological functions
— at “0” to “1”, max. 48 µs; Minimum pulse width/minimum pause between pulses at maximum counting frequency
Cable length
● shielded, max. 1 000 m; 100 m for technological functions
● unshielded, max. 600 m; for technological functions: No
for technological functions
— shielded, max. 100 m; at maximum count frequency
— unshielded, max. not allowed
Digital outputs
Number of digital outputs 6
● of which high-speed outputs 2; Notice: You cannot connect the fast outputs of your CPU in parallel
integrated channels (DO) 6
Short-circuit protection Yes; Clocked electronically
● Response threshold, typ. 1 A
Limitation of inductive shutdown voltage to L+ (-48 V)
Controlling a digital input Yes
Switching capacity of the outputs
● on lamp load, max. 5 W
Load resistance range
● lower limit 48 Ω
● upper limit 4 kΩ
Output voltage
● for signal “1”, min. L+ (-0.8 V)
Output current
● for signal “1” rated value 500 mA
● for signal “1” permissible range, min. 5 mA
● for signal “1” permissible range, max. 0.6 A
● for signal “1” minimum load current 5 mA
● for signal “0” residual current, max. 0.5 mA
Parallel switching of two outputs
● for uprating No
● for redundant control of a load Yes
Switching frequency
● with resistive load, max. 100 Hz
● with inductive load, max. 0.5 Hz
● on lamp load, max. 100 Hz
● of the pulse outputs, with resistive load, max. 2.5 kHz
Total current of the outputs (per group)
horizontal installation
— up to 40 °C, max. 2 A
— up to 60 °C, max. 1.5 A
vertical installation
— up to 40 °C, max. 1.5 A
Cable length
● shielded, max. 1 000 m
● unshielded, max. 600 m
Analog inputs
Number of analog inputs 0
integrated channels (AI) 0
Analog outputs
Number of analog outputs 0
integrated channels (AO) 0
Encoder
Connectable encoders
● 2-wire sensor Yes
— permissible quiescent current (2-wire sensor), max. 1.5 mA
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; but via CP and loadable FB
— 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
Interrupts/diagnostics/status information
Diagnostics indication LED
● Status indicator digital input (green) Yes
● Status indicator digital output (green) Yes
Integrated Functions
Frequency measurement Yes
● Number of frequency meters 2; up to 10 kHz (see “Technological Functions” manual)
controlled positioning No
integrated function blocks (closed-loop control) No
PID controller No
Number of pulse outputs 2; Pulse width modulation up to 2.5 kHz (see “Technological Functions” Manual)
Limit frequency (pulse) 2.5 kHz
Potential separation
Potential separation digital inputs
● Potential separation digital inputs Yes
● between the channels No
● between the channels and backplane bus Yes
Potential separation digital outputs
● Potential separation digital outputs Yes
● between the channels No
● between the channels and backplane bus Yes
Isolation
Isolation tested with 600 V DC
Ambient conditions
Ambient temperature during operation
● min. 0 °C
● max. 60 °C
configuration / header
Configuration software
● STEP 7 Yes; STEP 7 V5.5 + SP1 or higher or STEP 7 V5.3 + SP2 or higher with HSP 203
● STEP 7 Lite No
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 80 mm
Height 125 mm
Depth 130 mm
Weights
Weight, approx. 410 g
Weight 0.458 kg
Dimensions 13.1 × 15.3 × 8.9 cm

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