What Is SCADA? Supervisory Control Without Replacing the PLC
SCADA sits above PLCs and RTUs: it acquires field data, alarms operators, and issues supervisory commands across plants and remote assets—without replacing local deterministic control.

Facilitating high-density remote discrete control in decentralized automation architectures, the Mitsubishi Electric AJ65SBTB1-32TE1 operates as a 32-point source transistor output block designed for integration into CC-Link open fieldbus networks. This remote I/O module features photocoupler isolation between the internal logic circuitry and the field terminal interface, suppressing electrical transients and protecting upstream network devices. Built with a compact footprint, the module simplifies field wiring through an integrated terminal block interface and supports both 12VDC and 24VDC load environments, making it suitable for distributed control panels in process and manufacturing automation.
| Parameter | Technical Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Number | AJ65SBTB1-32TE1 |
| Product Type | Transistor Output Module (Source Type) |
| Network Protocol | CC-Link (Remote I/O Station) |
| Number of Output Points | 32 Points |
| Output Logic | Source (PNP Type) |
| Isolation Method | Photocoupler |
| Rated Load Voltage | 12 VDC / 24 VDC |
| Operating Load Voltage Range | 10.2 VDC to 26.4 VDC (Ripple ratio within 5%) |
| External Connections | Screw Terminal Block |
| Net Weight | 0.26 kg |
| Shipping Weight (Calculated) | 0.45 kg |
| Dimensions (W x H x D) | 179 mm x 50 mm x 40 mm |
| Terminal Block Label | Function / Circuit Assignment |
|---|---|
| DA, DB, DG | CC-Link Network Data Lines (A, B, Ground) |
| SLD / FG | Shield Line Connection / Frame Ground |
| 24V / 0V (Power) | External Module Power Input (24VDC) |
| Y00 to Y1F | Transistor Source Output Channels (32 Points) |
| COM | Common Terminal for External Load Power Supply |
The AJ65SBTB1-32TE1 is a source-type (PNP) output module. If replacing an older AJ65SBTB1-32T model, note that the non-suffix "T" variant is a sink-type (NPN) module. Direct replacement without swapping the common return paths on your external field loads will result in a short circuit or failure of the loads to actuate. Ensure that your system wiring diagrams specifically specify PNP field switching logic before installing this unit.
When switching inductive loads such as solenoid coils or contactors, ensure external surge suppressors (flyback diodes) are installed directly across the load terminals. While the AJ65SBTB1-32TE1 includes internal clamp protection, repeated high-frequency inductive energy dissipation can cause premature thermal wear on the output transistors. Additionally, respect the maximum aggregate current limit per common group to avoid local trace overheating inside the module during simultaneous 32-point actuation.
During CC-Link commissioning, set the station number switches and baud rate rotary switches on the module faceplate prior to powering up the station. The master module will not register on-the-fly network configuration changes. Always verify that a 110-ohm terminating resistor is installed at both physical ends of the CC-Link trunk line to stabilize communication waveforms and prevent transmission packet loss.
CRITICAL WARNING: Ensure all main AC/DC supply voltages to the control panel are completely de-energized and locked out before attempting installation, removal, or terminal wiring modification. Failure to disconnect power can result in field circuit damage or electrical shock hazards.
Mount the module onto a standard 35mm symmetrical DIN rail inside a dry, clean industrial enclosure meeting IP54 or higher requirements.
Verify that the rotary switches for Station Number and Baud Rate are set to match the configurations defined in your PLC's network master parameters.
Wire the CC-Link communication bus using dedicated shielded twisted-pair cabling. Ground the SLD and FG terminals to an appropriate class-D earth ground.
Connect the field outputs and common lines. Confirm terminal screw tightness to prevent high resistance connections or intermittent signal drops under thermal cycling.
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| Country of origin |
United States
|