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6ES7621-6BD02-0AE3

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Siemens 6ES7621-6BD02-0AE3 is a SIMATIC C7-621 ASI compact control unit that combines an S7-300 CPU, OP3 operator interface, and AS-Interface master in one panel device.
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Technical specifications for 6ES7621-6BD02-0AE3

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7621-6BD02-0AE3
  • Product Family:
    Siemens Simatic HMI
  • Product Type:
    SIMATIC C7-621 AS-i compact unit with S7-300 CPU, OP3 and AS-Interface master
  • Stock:
    1
  • Integrated Controller:
    CPU 314
  • CPU User Memory:
    32 KB
  • Integrated Operator Interface:
    OP3
  • Display:
    LED-backlit LC display, 2 lines x 20 characters
  • Character Height:
    5 mm
  • HMI User Memory:
    128 KB flash
  • AS-Interface:
    Integrated master
  • Programming Interface:
    MPI
  • Controller Engineering:
    STEP 7 / STEP 7-Lite
  • Operator Engineering:
    ProTool/Lite, ProTool, or ProTool/Pro
  • Software Controllers:
    8 loops
  • Product Configuration:
    Compact unit with mounting accessories and connectors
  • Weight:
    2.45 lbs (1.11 kg)
  • Estimated shipping dimensions:
    29.5x22.3x18.7cm
  • Tariff Code:
    85371091
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Integrated Roles AS-i Path Engineering Operator Unit

Features:

  • An S7-300 CPU, OP3 operator interface, and AS-Interface master share one compact panel unit.
  • STEP 7 handles controller logic while ProTool defines operator screens and messages.
  • MPI programming, local operation, external expansion, and AS-i field traffic use separate connection roles.
Control logic runs inside Siemens 6ES7621-6BD02-0AE3 while the configured OP3 interface turns selected variables into local displays and operator commands.

The AS-i master of 6ES7621-6BD02-0AE3 connects distributed field devices without replacing the MPI programming path.

Engineering files for 6ES7621-6BD02-0AE3 must preserve both the controller project and the operator project because each section serves a different function.

The Siemens 6ES7621-6BD02-0AE3 SIMATIC C7-621 ASI Compact Control Unit may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7621-6BD02-0AE3 SIMATIC C7-621 ASI Compact Control Unit Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Controller and Operator Responsibilities

  • CPU task: The integrated S7-300 CPU executes the automation program.
  • Operator task: The OP3 section displays configured process values and accepts local commands.
  • Shared enclosure: Controller and operator hardware occupy the same compact panel device.
  • Project dependency: Runtime functions depend on the transferred controller and operator configurations.

Distributed Field Communication

  • Master role: The integrated AS-Interface master coordinates the attached AS-i segment.
  • Field exchange: Sensor and actuator data move between AS-i devices and the controller program.
  • Interface separation: AS-i field traffic remains separate from the MPI programming connection.
  • Configuration boundary: The exact AS-i slave arrangement must be defined in the automation project.

Controller and HMI Project Tools

  • STEP 7: STEP 7 or STEP 7-Mini creates and transfers the controller program.
  • ProTool: ProTool or ProTool/Lite creates the operator screens, entries, and messages.
  • MPI link: The programming device communicates with the integrated controller through MPI.
  • Dual project: Controller logic and operator visualization must be backed up as separate engineering content.

Display and Key Operation

  • Display role: The screen presents the configured operating level and process information.
  • Cursor keys: Direction keys move between configured entries and screens.
  • ENTER key: ENTER accepts a selected or edited operator value.
  • ESC key: ESC cancels an entry or returns to the preceding operating level.
Description
Siemens 6ES7621-6BD02-0AE3 is a SIMATIC C7-621 ASI compact unit that integrates an S7-300 CPU, an OP3 operator interface, and an AS-Interface master. The CPU executes the control program, the front operator section presents values and commands, and the AS-i master exchanges field data with the connected AS-Interface segment.

The operator and controller sections of 6ES7621-6BD02-0AE3 share one enclosure but retain different engineering tasks. STEP 7 or STEP 7-Mini handles the controller program, while ProTool or ProTool/Lite defines the operator screens, messages, and input fields.

Programming and controller communication for 6ES7621-6BD02-0AE3 use the integrated MPI path, while external I/O expansion and the AS-i master serve separate field connections. This division keeps programming access, local operation, and distributed sensor/actuator traffic on distinct interfaces.

Front keys and the display on 6ES7621-6BD02-0AE3 let an operator navigate configured screens, acknowledge entries, and issue commands to the CPU program. The engineering project determines which values and messages are exposed; the panel does not create those functions without configuration.
Alternative Names
Siemens 6ES76216BD020AE3 6ES7621-6BD02-0AE3 SIMATIC C7-621 AS-i Compact Unit 6ES7621 6BD02 0AE3 6ES7621-6BDO2-0AE3 6ES7 621-6BD02-0AE3 Siemens 6ES7621-6BD02-0AE3 6ES76216BD020AE3 6ES7 621 6BD02 0AE3
Technical notes
The integrated 32 KB CPU, 128 KB HMI flash, 2 x 20 LED-backlit display, and AS-Interface master give Siemens 6ES7621-6BD02-0AE3 separate controller, operator, and field-network roles.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is integrated inside 6ES7621-6BD02-0AE3?
Siemens 6ES7621-6BD02-0AE3 combines an S7-300 CPU, OP3 operator interface, and AS-Interface master in one compact unit.
Why are two engineering tools associated with 6ES7621-6BD02-0AE3?
STEP 7 programs the controller of 6ES7621-6BD02-0AE3, while ProTool defines its operator screens, messages, and entries.
Does the AS-Interface master of 6ES7621-6BD02-0AE3 replace the MPI port?
No. The 6ES7621-6BD02-0AE3 uses AS-i for field devices and MPI for programming and controller communication.
What should be backed up before replacing 6ES7621-6BD02-0AE3?
Back up both the STEP 7 controller project and the ProTool operator project used by 6ES7621-6BD02-0AE3.
How does an operator confirm an entry on 6ES7621-6BD02-0AE3?
The configured OP3 interface of 6ES7621-6BD02-0AE3 uses ENTER to accept an entry and ESC to cancel or move back.
Is the prepared manual a dedicated data sheet for 6ES7621-6BD02-0AE3?
No. The uploaded document is an official C7-621 family guide; the exact 6ES7621-6BD02-0AE3 identity is verified on Siemens SiePortal.

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