Features:
- The SIJECT CI16i assembly combines the control interface and CPU 314 in one unit.
- Separate field paths handle digital, temperature, linear-scale and analog signals.
- Operator-panel, MPI and P_BUS connections separate operating, engineering and system communication.
The integrated controller executes the stored STEP 7 program while its assigned inputs supply the machine state used by that logic.
Output groups carry the resulting commands to digital loads, analog devices and proportional-valve channels through their dedicated connectors.
Connector identity, channel assignment and project data must remain aligned when the complete SIJECT control interface is installed or exchanged.
The Siemens 6AT1131-6DD21-0AB0 SIJECT CI16i Control Interface with Integrated CPU 314 may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6AT1131-6DD21-0AB0 SIJECT CI16i Control Interface 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.
How field signals move through the CI16i
- Digital inputs: Machine-state contacts enter grouped input circuits before the CPU program evaluates them.
- Temperature channels: Thermocouple inputs keep temperature acquisition separate from ordinary contact signals.
- Position feedback: Linear-scale inputs convert the connected resistive position signals for controller use.
- Output paths: Digital, voltage and valve-current outputs send different command types to their assigned loads.
Separate connections for operation and engineering
- Operator panel: The dedicated panel connection carries the local operating interface for the SIJECT machine.
- MPI: The MPI path supports controller engineering and communication with the assigned automation nodes.
- P_BUS: The system-bus connection links the control interface to the documented SIJECT control arrangement.
- Path isolation: Troubleshooting should identify which link failed before addresses or controller parameters are changed.
Power distribution and connector discipline
- Supply entry: The 24 V DC source feeds the integrated CPU, communication circuits and local I/O electronics.
- Load separation: Field-output wiring must follow the assigned connector and return path rather than sharing an unverified common.
- Signal classes: Thermocouple, scale and analog wiring should remain separated from switched output conductors.
- Cabinet checks: Clearance, connector seating and documented environmental limits apply to the complete control interface.
Commissioning checks before machine release
- Project match: Load only the approved STEP 7 project for the installed CPU and assigned SIJECT machine.
- I/O map: Compare every channel assignment with the physical connector and the connected field device.
- Network settings: Confirm the operator-panel, MPI and P_BUS addresses before communication testing.
- Functional sequence: Test sensing, program response and each affected output path before normal operation.