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Simatic S7-300

Introduction SIMATIC S7-300: The Modular Controller for innovative system solutions in the manufacturing industry SIMATIC S7-300 is the best-selling controller of Totally integrated Automation spectrum with a host of successful reference applications worldwide for the most varied industrial sectors.   Manufacturing Engineering Automotive industry General machine construction Special-purpose machine manufacturing Standard mechanical equipment manufacture, OEMs Plastic processing Packaging industry Food, beverages and tobacco industries Process engineering The S7-300 enables space-saving and modular configurations. In addition to the modules only a DIN rail is required for hooking in the modules and screwing them into place. If the automation task requires more than 8 modules, the central controller (CC) of the S7-300 can be expanded using expansion units (EUs) Up to 32 modules can be used in the central rack and up to 8 per expansion unit. Interface Modules (IMs) handle communication between the individual racks autonomously. In a single-tiered configuration, this results in a maximum configuration of 256 I/O, and in multi-tiered configurations up to 1024 I/O. In distributed configurations with PROFIBUS DP, 65536 I/O connections are possible. The slots are freely addressable, that is, there are no slot rules.

Module range

SIMATIC S7-300

Signal Modules

Signal modules are the interface of SIMATIC S7-300 to the process. A host of different digital and analog modules provide exactly the inputs/outputs required for each task.

Digital and analog modules differ as regards the number of channels, voltage and current ranges, electrical isolation, diagnostics and alarm functions, etc.

Digital input Analog input
Module Voltage range Number of channels Module Measuring range Resolution Number of channels
SM 321 24 VDC 16, 32 SM 331 Voltage Up to 16 bits 2, 8
SM 321 48-125 V DC 16 SM 331 Current
(also HART)		 Up to 16 bits 2, 8
SM 321 24/48 VUC 16 SM 331 Resistance Up to 16 bits 1, 4, 8
SM 321 120/230 V DC 8, 16, 32 SM 331 Thermocouple elements Up to 16 bits 2, 8
SM 331 Resistance The Up to 16 bits 1, 4, 8
Digital inputs/out Analog input/output
Module Voltage range Number of channels Module Measuring range Resolution Number of channels
SM 323 24 VDC 8 or 16 DI and DO SM 334 Voltage Up to 13 bits 2, 4
SM 327 24 V DC 8 DI and 8 DX (parameterized as input or output) SM 334 Current
(also HART)		 8 bits 4
SM 334 Resistance 13 bits 4
SM 334 Resistance thermocouple 15 bits 4
SM 335 Voltage 14 bits 4
SM 335 Current 14 bits 4
Digital output   Analog output
Module Voltage range Current range Number of channels Module Measuring range Resolution Number of channels
SM 322 24 VDC 0.5A 8, 16 SM 332 Voltage Up to 16 bits 2, 4, 8
SM 322 24 V DC 2A 8 SM 332 Current
(also HART)		 Up to 16 bits 2, 4, 8
SM 322 48-125 V DAC 1.5A 8
SM 322 120/130 V AC 1A 8, 16, 32
SM 322 120/130 VAC 2A 8
SM 322 UC (relay) 0.5A-5A 8, 16

Special Functions Module & Communications Processors

SIMATIC S7-300

Point-to-Point link via communications processors (CPs) is an extremely powerful and low cost alternative to bus-systems. The advantage of point-to-point links over bus systems is especially pronounced when only a few (RS485) devices are to be connected to the SIMATIC S7.

The CPs can also economically connect third party systems to the SIMATIC S7. Thanks to the great flexibility of the CPs different physical transmission media, speeds or even customized transmission protocols can be implemented.

The configuring data are stored in a system data block stored in the CPU. When modules are replaced, the new module is therefore immediately ready for use.

Technical data
Point-to-Point Link
 Application Low-cost entry version Powerful computer conncetion, Loadable protocols
Transmision rate Low (19200 bit/s) High (76800 bit/s)
Loadable protocols MODBUS master (6ES7340-1AA.),
MODBUS slave (6ES7340-1AB.),
Data highway (6ES7340-1AE.)
Module CP 340 CP 341
Order No. Group: 6ES7 340-1. 341-1.
Physical transmission media
RS 232C (V.24) CP 340-1A CP 341-1A
20 mA (TTY) CP 340-1B CP 341-1B
RS 422/485 (X.27) CP 340-1C CP 341-1C
Integrated transmission protocols
ACII ■ ■
Printer driver ■ ■
3964 (R) ■ ■
RK 512 ■

Technology

Function m,odulesc are intelligent modules that independently
execute the technoogical tasks and thus reduce the load on the 
CPU. They are used when a high level of accuracy and dyna,ic 
response is required.

Function modules
Tchnological function Channels / Axes Modue
Counting, measuring, proportioning position detection (incremental) 1 FM350-1
Counting, measuring, proportining 8 FM 350-2 3)
Cam controls 1 FM 352
High-speed dinary logic operations 1 FM 352-
PID control (continuous) 4 FM 355C
PID control (step/impulse) 4 FM 355S
Temperature control (continuous) 4 FM 355-2C
Temperature control (step/impulse) 4 FM 355-2S
Positioning (rapid travers/creep feed) 2 FM 351
Position detection (SSI) 3 FSM 338
Positioning (with stepper drives) 1 FM 353
Positioning (with servo drives) 1 FM 354
Positioning, path control, interpolation, synchronization 4 FM 357-2
Isochronous connection of drives via PROFIBUS 4 IM 174

Communication

Commnuication processors are used for connecting S7-300 
to the different dus systems / communication networks as well 
for point-to-point link.

Communcations processors
Bus system /communication network Module
AS-Interface (mater) 2) CP 343-2 
CP343-2 P
PROFIBUS DP 2) CP 342-5
CP342-5 FO
(for fiber-optic conductors)
PROFIBUS FMS 2) CP 343-5
PROFINET / Industrial Ethernet 2) CP 343-1 Lean
CP 343-1
CP 343-1 Advanced
(with IT functionnality)
Point-to-point link CP 340 4) 
CP 341 4)
WAN TIM 3V-IE 
TIM 3V-IE Advanced

Technical data for technology CPUs

SIMATIC S7-300

Technollogy CPU CPU 315T-2 DP CPU 317T-2 DP
Dimensions 160 x125 x 130 160 x 125 x 130
Required front connector 1 x 40-pin 1 x 40-pin
Order No. group: 6ES7 315-6TG. 317-6TJ.
Momory
RAM 128 KB 512
Instructions 42 K 170 K
Processing times
Bit memory 0,1 µs 0,05 µs
Word operation/fixed-point operation/floating-point operations 0,2/2/3 µs 0,2/0,2/1 µs
Bit memories/timers/counters
Bit memory 4096 bytes 4096 bytes
S7 timers/S7 counters 256/256 512/512
IEC timers/IEC counters ■ ■
Address areas
I/O address area 2048/2048 bytes 8192/8192 bytes
Process I/O image 128/128 byte 256/256 bytes
Digital channels (central) 256 256
Analog channels (central) 64 64
DP interface
Integrated I/O ■/■ ■/■
DP slave ■ ■
Integrated I/O
Digital inputs 4 x 24 V DC; for BERO evaluation, for example
Digital outputs 8 x 24 V DC; for high-speed cam switching functions
Integrated functions Gearbox synchronism and curve synchronism 
Travel to fixed stop
Registration mark correction via measuring probe 
Path-or time-dependent cam switching 
Controlled positioning

More Articles...

  • Overview
  • Products
  • Documentation

Features

  • Five levels of control available, providing a wide variety of features to suit most applications
  • Offers similar functionality as traditional SLCs and PLCs, only in a smaller, packaged form factor
  • Compatible with our PanelView™ Component graphic terminals
  • Shares common RSLogix™ 500 programming software and RSLogix Micro programming software, providing an instruction set that is common to the MicroLogix™ and SLC™ 500 controller families

Products

  • 1761 MicroLogix 1000 Controllers
  • 1763 MicroLogix 1100 Controllers
  • 1762 MicroLogix 1200 Controllers
  • 1766 MicroLogix 1400 Controllers
  • 1764 MicroLogix 1500 Controllers
  • 1761 Communication Interfaces
  • 1762 MicroLogix Expansion I/O
  • 1769 Compact I/O™

MicroLogix 1000 Control System

Bulletin 1761 MicroLogix™ 1000 Controllers are the most compact of the MicroLogix family. This controller fits a wide variety of applications up to 32 I/O points, while using a fraction of the space of a full-size controller. It contains embedded analog I/O, providing compact and cost-effective analog performance.

MicroLogix 1100 Control System

Bulletin 1763 MicroLogix™ 1100 Controllers add embedded EtherNet/IP™, on-line editing and an LCD to the MicroLogix family. The built-in LCD shows controller status, I/O status and simple operator messages. With 2 analog inputs, 10 digital inputs and 6 digital outputs, the MicroLogix 1100 controller can handle a wide variety of tasks.

MicroLogix 1200 Control System

Bulletin 1762 MicroLogix™ 1200 Controllers are small enough to fit in tight spaces and powerful enough to accommodate a broad range of applications. Our controller is available in 24-point and 40-point versions. You can expand the I/O count using rackless I/O modules. You can build larger control systems, achieve greater application flexibility, and expand your system at a lower cost and with reduced parts inventory. A field-upgradeable flash operating system keeps you be up-to-date with the latest features.

MicroLogix 1400 Control System

Bulletin 1766 MicroLogix™ 1400 Controllers build upon critical MicroLogix 1100 features: EtherNet/IP™, on-line editing and a built-in LCD. These controllers feature a higher I/O count, faster high-speed counter, pulse train output, enhanced network capabilities and backlight on the LCD. Controllers without embedded analog I/O points provide 32 digital I/O points, while analog versions offer 32 digital I/O points and 6 analog I/O points. You can expand all versions with up to seven 1762 expansion I/O modules.

MicroLogix 1500 Control System

Bulletin 1764 MicroLogix™ 1500 Controllers are the most expandable members of the MicroLogix family. Building upon the critical features of the MicroLogix 1200 controllers, this controller fits many applications that traditionally called for larger, more expensive controllers. With a processor, base unit with power supply and embedded I/O, this controller packs the best features of a modular system into a low-cost, small footprint.

MicroLogix Expansion I/O

Bulletin 1762 MicroLogix™ Expansion I/O modules extend the capabilities of the MicroLogix 1100, 1200, and 1400 controllers by maximizing flexibility of the I/O count and type. The modular, rackless design enhances cost savings and reduces replacement parts inventory. Modules can be either DIN rail or panel mounted.

Compact I/O

Bulletin 1769 Compact I/O™ modules can be used as local and distributed I/O for a CompactLogix™ or MicroLogix™ 1500 controller. Select from a variety of digital, analog, and specialty modules. The 16- and 32-point modules provide high-density I/O in a small package. A built-in removable terminal block provides connections to I/O sensors and actuators. You can route the  I/O wiring from beneath the module to the I/O terminals.

MicroLogix Communications

Bulletin 1761 Communication Interfaces and Bulletin 1769 DeviceNet™ Scanner Module support your MicroLogix™ controller systems with a variety of features. Any DH-485 compatible device that has an RS-232 port can access any other DH-485 network with these products. Connect to Ethernet networks and upload programs, download programs, communicate between controllers and leverage web server functionality. Program and monitor your MicroLogix system over the DeviceNet network. Upload, download, and monitor programs through the DeviceNet scanner.

Frequently Viewed Publications

TitleNumberLanguage
MicroLogix Family Brochure 1761-BR006 PDFCS, DE, EN, ES, FR, IT, KO, PL, PT, ZH
MicroLogix 1100 Product Profile 1763-PP001 PDFEN
MicroLogix 1400 Product Profile 1766-PP001 PDFEN, KO
MicroLogix Programmable Controllers Family Selection Guide 1761-SG001 PDFEN
MicroLogix 1000 Programmable Controllers User Manual 1761-UM003 PDFEN
MicroLogix 1100 Programmable Controllers User Manual 1763-UM001 PDFEN
MicroLogix 1200 Programmable Controllers User Manual 1762-UM001 PDFEN
MicroLogix 1400 Programmable Controllers User Manual 1766-UM001 PDFEN
MicroLogix 1500 Programmable Controllers User Manual 1764-UM001 PDFEN