About Siemens S7 200 Smart PLC St20

NAKSH TECHNOLOGY We are offering Siemens S7 200 Smart PLCto our client. SIMATIC S7-200 SMART PLC is designed to suit the needs of developing markets that have higher pressures of price and demands on performance. Providing an excellent performance-to-price ratio, SIMATIC S7-200 SMART PLC when combined with other SMART drive products from Siemens helps in building extremely cost effective efficient automation solutions.

Data Sheet 6ES7288-1ST20-0AA1

SIMATIC S7-200 SMART CPU ST20 (DC/DC/DC)
Onboard I/O: 12 DI (24 V DC), 8 DQ (24 V DC)
Power supply: 20.4 28.8 V DC
Program/Data memory: 20 KB
Web server support

General Information

Product type designation: CPU ST20 DC/DC/DC

Engineering with

• STEP 7 Micro/WIN SMART

Installation

• Rail mounting: Yes (DIN rail)

Supply Voltage

• Rated value (DC): 24 V

• Permissible range: 20.4 V 28.8 V

Input Current

• Current consumption, max.: 720 mA (24 V DC)

• Inrush current, max.: 11.7 A (at 28.8 V)

Output Current

• Output current, max.: 300 mA (24 V DC sensor power)

• Backplane bus (5 V DC): max. 1.4 A

Power Loss

• Power loss, max.: 20 W

Memory

• Type: DDR

• Flash: Yes

• RAM: Yes

• Memory available for user data: 8 KB

• Program memory: 12 KB

• Micro Memory Card: Yes (microSDHC optional)

• Backup: Yes (maintenance-free, RTC backup 7 days)

CPU Processing Times

• Bit operations: 150 ns

• Word operations: 1.2 s

• Floating point operations: 3.6 s

Address Area

I/O address area

• Inputs: 144 bytes (256 DI bits + 56 analog input words)

• Outputs: 144 bytes (256 DO bits + 56 analog output words)

Time of Day Clock

• Type: Hardware clock, no battery backup

• Backup time: 7 days

• Accuracy: Max. 120 s/day (120 s/month at 25C)

Digital Inputs

• Number of digital inputs: 12

• Inputs for technological functions (HSC): 6

• Source/Sink input: Yes

Input Voltage

• Rated: 24 V DC

• Signal "0":

  • I0.0I0.3: < 1 V

  • I0.4I2.7: < 5 V

• Signal "1":

  • I0.0I0.3: > 4 V

  • I0.4I2.7: > 15 V

Input Current

• Signal "0" max: 1 mA

• Signal "1" typ.: 4 mA

Input Delay (parameterizable)

0.2 / 0.4 / 0.8 / 1.6 / 3.2 / 6.4 / 12.8 ms

Technological Functions

• 6 single-phase HSC

  • 4 200 kHz

  • 2 30 kHz

• 4 A/B phase HSC

  • 2 100 kHz

  • 2 20 kHz

Cable Length

• Shielded: 500 m (50 m for tech. functions)

• Unshielded: 300 m

Digital Outputs

• Number: 8

• High-speed outputs: 3 (100 kHz PTO)

Output Characteristics

• Resistive load max.: 0.5 A

• Lamp load max.: 5 W

Output Voltage

• Signal "1" min.: 20 V DC

Output Current

• Rated: 0.5 A

• Residual current "0": max. 10 A

Output Delay

• 0 1: max. 3 s (pulse outputs: 1 s)

• 1 0: max. 200 s (pulse outputs: 50 s)

Switching Frequency

• Pulse outputs max.: 100 kHz

Cable Length

• Shielded: 500 m

• Unshielded: 150 m

Interfaces

Industrial Ethernet: 1

RS485: 1

1. Ethernet Interface (PROFINET)

• Isolation: Yes (1,500 V AC)

• Auto rate detection: 10/100 Mbps

• Autonegotiation: Yes

• Autocrossing: Yes

• Connector: RJ45

Protocols

• PROFINET IO Controller (V2.4)

• PROFINET IO Device (I-Device since V2.5)

PROFINET IO Controller

• Max. IO devices: 8

• Update time: min. 4 ms (depends on configuration)

• Address area per device:

  • Inputs: max. 128 bytes

  • Outputs: max. 128 bytes

2. RS485 Interface

• Type: RS485, max. 187.5 kbps

• PROFIBUS DP (via CM DP module)

Protocols (Ethernet)

• TCP/IP

• S7 communication (client/server)

Integrated Functions

• Counters: 6

• PID controller: Yes (8 loops)

• Pulse outputs: 3

EMC

ESD (IEC 61000-4-2)

• Air: 8 kV

• Contact: 4 kV

HF Fields (IEC 61000-4-3)

• 10 V/m (801000 MHz)

Burst (IEC 61000-4-4)

• Supply lines: 2 kV

• Signal cables: 2 kV

Conducted disturbances (IEC 61000-4-6)

• 10 V (150 kHz80 MHz)

Standards & Approvals

• CE mark: Yes

Ambient Conditions

• Operating temperature: -20C +60C

• Horizontal: 0C 60C

• Vertical: 0C 50C

• Storage: -40C 70C

• Max humidity: 95% (non-condensing)

• Operating altitude: -1000 m to +2000 m

Dimensions & Weight

• Width: 90 mm

• Height: 100 mm

• Depth: 81 mm

• Weight: approx. 320 g 

Technical Details