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.