Implementing 3-Switch XOR Ladder Logic with Internal Bit
Implement a 3-SPST switch XOR light circuit in LogixPro or RSLogix 500 using an internal relay bit. Includes truth tables, boolean equations, and verified.
The ABB 88QT03C-E GJR2374500R2111 is a bus coupler module designed for signal processing and bus interfacing within the ABB (BBC) PROCONTROL P distributed control system. Operating on a 24 V DC power supply, this double-board module serves as a critical communication bridge between input/output stations and the central PROCONTROL system bus network.
Built on a dual-printed circuit board architecture, the ABB 88QT03C-E GJR2374500R2111 handles high-speed data transmission and cycle-based signal exchange. The module features an onboard RS-485 interface operating at 1 MBaud to communicate with remote bus coupling hardware, supporting passive differential signal processing and dedicated cable connections for multi-cabinet layouts.
Designed for demanding power generation and industrial automation environments, the ABB 88QT03C-E GJR2374500R2111 incorporates cyclic firmware self-diagnostics. Internal monitoring functions include dual-microprocessor verification, parity bit data protection, station bus telegram sink time monitoring, and external disturbance signal logging to maintain uninterrupted control system availability.
| Parameter | Specification |
|---|---|
| Manufacturer | ABB / BBC |
| Model Number | 88QT03C-E |
| Part Number | GJR2374500R2111 |
| Product Type | Bus Coupler Module |
| System Compatibility | PROCONTROL P |
| Parameter | Specification |
|---|---|
| Operating Voltage | 24 V DC +/- 25% |
| Current Consumption | Approx. 166 mA |
| Power Dissipation | 4 W (typical) |
| Disturbance Input Voltage (Ue) | 24 V DC |
| Disturbance Input Current (Ie) | 5 mA |
| Annunciation Output Voltage (Ua) | 24 V DC |
| Annunciation Output Current (Ia) | 6 mA |
| Parameter | Specification |
|---|---|
| Communication Interface | RS-485 |
| Transmission Rate | 1 MBaud |
| Termination Resistor | 100 Ohm |
| Passive Differential Voltage | 400 mV |
| Max. Inter-Module Connection | 10 m (total) / 1 m via cable 89IK01 |
| Parameter | Specification |
|---|---|
| Electrostatic Discharge (ESD) | 8 kV to front panel (acc. to IEC 801/2) |
| Electromagnetic Compatibility (EMC) | 2 kV burst in remote bus cable (acc. to IEC 801/4) |
| Parameter | Specification |
|---|---|
| Board Dimensions | 6 units, 2 divisions, 160 mm deep |
| Board Construction | 2 mechanically and electrically connected PCBs |
| Connector X11 | 48-pole edge connector type F (Station Bus / IO) |
| Connector X21 | 32-pole edge connector type F (External Disturbance) |
| Module Weight | Approx. 0.83 kg |
| Interface | Connector Type | Function |
|---|---|---|
| Connector X11 | 48-Pole Edge Connector (Type F) | Station bus communication and I/O station bus interface |
| Connector X21 | 32-Pole Edge Connector (Type F) | External disturbance signals (SME1-SME3, SMS, STX) |
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Returns & Warranty



The ABB 88QT03C-E GJR2374500R2111 is a bus coupler module designed for signal processing and bus interfacing within the ABB (BBC) PROCONTROL P distributed control system. Operating on a 24 V DC power supply, this double-board module serves as a critical communication bridge between input/output stations and the central PROCONTROL system bus network.
Built on a dual-printed circuit board architecture, the ABB 88QT03C-E GJR2374500R2111 handles high-speed data transmission and cycle-based signal exchange. The module features an onboard RS-485 interface operating at 1 MBaud to communicate with remote bus coupling hardware, supporting passive differential signal processing and dedicated cable connections for multi-cabinet layouts.
Designed for demanding power generation and industrial automation environments, the ABB 88QT03C-E GJR2374500R2111 incorporates cyclic firmware self-diagnostics. Internal monitoring functions include dual-microprocessor verification, parity bit data protection, station bus telegram sink time monitoring, and external disturbance signal logging to maintain uninterrupted control system availability.
| Parameter | Specification |
|---|---|
| Manufacturer | ABB / BBC |
| Model Number | 88QT03C-E |
| Part Number | GJR2374500R2111 |
| Product Type | Bus Coupler Module |
| System Compatibility | PROCONTROL P |
| Parameter | Specification |
|---|---|
| Operating Voltage | 24 V DC +/- 25% |
| Current Consumption | Approx. 166 mA |
| Power Dissipation | 4 W (typical) |
| Disturbance Input Voltage (Ue) | 24 V DC |
| Disturbance Input Current (Ie) | 5 mA |
| Annunciation Output Voltage (Ua) | 24 V DC |
| Annunciation Output Current (Ia) | 6 mA |
| Parameter | Specification |
|---|---|
| Communication Interface | RS-485 |
| Transmission Rate | 1 MBaud |
| Termination Resistor | 100 Ohm |
| Passive Differential Voltage | 400 mV |
| Max. Inter-Module Connection | 10 m (total) / 1 m via cable 89IK01 |
| Parameter | Specification |
|---|---|
| Electrostatic Discharge (ESD) | 8 kV to front panel (acc. to IEC 801/2) |
| Electromagnetic Compatibility (EMC) | 2 kV burst in remote bus cable (acc. to IEC 801/4) |
| Parameter | Specification |
|---|---|
| Board Dimensions | 6 units, 2 divisions, 160 mm deep |
| Board Construction | 2 mechanically and electrically connected PCBs |
| Connector X11 | 48-pole edge connector type F (Station Bus / IO) |
| Connector X21 | 32-pole edge connector type F (External Disturbance) |
| Module Weight | Approx. 0.83 kg |
| Interface | Connector Type | Function |
|---|---|---|
| Connector X11 | 48-Pole Edge Connector (Type F) | Station bus communication and I/O station bus interface |
| Connector X21 | 32-Pole Edge Connector (Type F) | External disturbance signals (SME1-SME3, SMS, STX) |
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Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Dots
|
| Country of origin |
Switzerland
|
| Power source |
DC Power
|