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.
Facilitating reliable real-time machine monitoring and tactile operator input, the Mitsubishi Electric GT1055-QSBD acts as a medium-sized operator control interface within the GOT1000 Series architecture. Equipped with a 5.7-inch STN color liquid crystal display, this HMI supports up to 256 colors at a standard QVGA resolution of 320 x 240 dots, ensuring clear visualization of plant processes. Engineered for demanding industrial environments, the front panel features an IP67F ingress protection rating to withstand dust and oil mist exposure, while its matrix resistive touch panel provides responsive mechanical actuation for critical control sequences.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Number | GT1055-QSBD |
| Series | GOT1000 |
| Display Type | STN Color Liquid Crystal (256 colors) |
| Screen Size / Resolution | 5.7 inches / QVGA (320 x 240 pixels) |
| Backlight Unit | Cold cathode tube (non-replaceable), approx. 75,000 hours service life |
| Input Supply Voltage | 24V DC (+10%, -15%) |
| Power Consumption | 9.84W or less (Normal), 4.32W or less (Backlight Off) |
| Inrush Current | 15A or less (2 ms duration at maximum load) |
| User Memory | 3 MB Flash (OS/Project), 128 KB SRAM (Alarms/Recipes) |
| Backup Battery | GT11-50BAT lithium battery (approx. 5-year life) |
| Ingress Protection | Equivalent to IP67F (front panel only) |
| Operating Temperature | Display: 0 to 50 degC; Non-display: 0 to 55 degC (horizontal mount) |
| External Dimensions | 164 mm (W) x 135 mm (H) x 56 mm (D) |
| Panel Cut Dimensions | 153 mm (W) x 121 mm (H) |
| Net Weight | 0.7 kg (excluding mounting brackets) |
| Interface Port | Connector Type & Specifications |
|---|---|
| RS-422/485 (Shared) | D-sub 9-pin (female). Supported on H/W version C or later. Baud rates: up to 115200 bps. Terminating resistance configured via built-in physical switch (OPEN, 110 Ohm, 330 Ohm). |
| RS-422 (Dedicated) | D-sub 9-pin (female). Present on older H/W versions A to B. Baud rates: up to 115200 bps. |
| RS-232 | D-sub 9-pin (male). Dedicated serial channel supporting baud rates up to 115200 bps. |
| USB Device | USB Mini-B channel. Full-speed 12 Mbps for project data transfer and firmware adjustment. |
| Memory Extension | Dedicated interface for GT10-50FMB memory board insertion. |
When deploying or replacing a GT1055-QSBD, verify the hardware (H/W) revision printed on the unit's rating label. Units categorized under H/W revision A and B strictly employ a dedicated RS-422 interface on the D-sub 9-pin female port. Units belonging to H/W revision C or later house an updated shared RS-422/485 layout, switchable via an integrated termination resistance slider. If migrating from older revisions to version C, ensure that the communication parameters and cabling conform to the new dual-purpose pin configuration.
The internal CCFL (Cold Cathode Fluorescent Lamp) backlight is highly sensitive to extreme temperatures. Operating the panel continuously near its 50 degC threshold can accelerate backlight aging. To maximize service lifespan, engineers must implement the Screen Save timer function in GT Designer to turn the backlight off during idle plant periods. Furthermore, the backlight unit in this model is integrated and cannot be serviced or replaced by the end user; physical backlight failure requires full assembly replacement.
Because this unit is powered by 24V DC, ripple voltage must be tightly monitored and kept below 200mV. High high-frequency ripple on the DC rail can cause erratic touchscreen touch-coordinate registration or intermittent communications dropouts on the RS-422 path. Always route the 24V DC power line separately from high-voltage AC motor lines, and ensure the HMI chassis is connected directly to a Class D ground (resistance of 100 Ohms or less).
Prepare the mounting panel cut with the exact dimensions of 153 mm x 121 mm. Ensure the mounting plate thickness is within 1.0 mm to 5.0 mm to ensure appropriate gasket compression.
Verify that the waterproof packing strip is securely seated within the channel on the rear bezel of the HMI to guarantee an IP67F dust and liquid seal.
Insert the GT1055-QSBD into the cutout and tighten the four included mounting brackets from the rear. Use a torque rating of 0.20 to 0.25 N·m to prevent warping the plastic HMI frame.
Terminate the 24V DC power conductors using M3 spade terminals (RAV1.25-3 or V2-N3A). Tighten the terminal block screws to a torque spec of 0.5 to 0.8 N·m.
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Facilitating reliable real-time machine monitoring and tactile operator input, the Mitsubishi Electric GT1055-QSBD acts as a medium-sized operator control interface within the GOT1000 Series architecture. Equipped with a 5.7-inch STN color liquid crystal display, this HMI supports up to 256 colors at a standard QVGA resolution of 320 x 240 dots, ensuring clear visualization of plant processes. Engineered for demanding industrial environments, the front panel features an IP67F ingress protection rating to withstand dust and oil mist exposure, while its matrix resistive touch panel provides responsive mechanical actuation for critical control sequences.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Number | GT1055-QSBD |
| Series | GOT1000 |
| Display Type | STN Color Liquid Crystal (256 colors) |
| Screen Size / Resolution | 5.7 inches / QVGA (320 x 240 pixels) |
| Backlight Unit | Cold cathode tube (non-replaceable), approx. 75,000 hours service life |
| Input Supply Voltage | 24V DC (+10%, -15%) |
| Power Consumption | 9.84W or less (Normal), 4.32W or less (Backlight Off) |
| Inrush Current | 15A or less (2 ms duration at maximum load) |
| User Memory | 3 MB Flash (OS/Project), 128 KB SRAM (Alarms/Recipes) |
| Backup Battery | GT11-50BAT lithium battery (approx. 5-year life) |
| Ingress Protection | Equivalent to IP67F (front panel only) |
| Operating Temperature | Display: 0 to 50 degC; Non-display: 0 to 55 degC (horizontal mount) |
| External Dimensions | 164 mm (W) x 135 mm (H) x 56 mm (D) |
| Panel Cut Dimensions | 153 mm (W) x 121 mm (H) |
| Net Weight | 0.7 kg (excluding mounting brackets) |
| Interface Port | Connector Type & Specifications |
|---|---|
| RS-422/485 (Shared) | D-sub 9-pin (female). Supported on H/W version C or later. Baud rates: up to 115200 bps. Terminating resistance configured via built-in physical switch (OPEN, 110 Ohm, 330 Ohm). |
| RS-422 (Dedicated) | D-sub 9-pin (female). Present on older H/W versions A to B. Baud rates: up to 115200 bps. |
| RS-232 | D-sub 9-pin (male). Dedicated serial channel supporting baud rates up to 115200 bps. |
| USB Device | USB Mini-B channel. Full-speed 12 Mbps for project data transfer and firmware adjustment. |
| Memory Extension | Dedicated interface for GT10-50FMB memory board insertion. |
When deploying or replacing a GT1055-QSBD, verify the hardware (H/W) revision printed on the unit's rating label. Units categorized under H/W revision A and B strictly employ a dedicated RS-422 interface on the D-sub 9-pin female port. Units belonging to H/W revision C or later house an updated shared RS-422/485 layout, switchable via an integrated termination resistance slider. If migrating from older revisions to version C, ensure that the communication parameters and cabling conform to the new dual-purpose pin configuration.
The internal CCFL (Cold Cathode Fluorescent Lamp) backlight is highly sensitive to extreme temperatures. Operating the panel continuously near its 50 degC threshold can accelerate backlight aging. To maximize service lifespan, engineers must implement the Screen Save timer function in GT Designer to turn the backlight off during idle plant periods. Furthermore, the backlight unit in this model is integrated and cannot be serviced or replaced by the end user; physical backlight failure requires full assembly replacement.
Because this unit is powered by 24V DC, ripple voltage must be tightly monitored and kept below 200mV. High high-frequency ripple on the DC rail can cause erratic touchscreen touch-coordinate registration or intermittent communications dropouts on the RS-422 path. Always route the 24V DC power line separately from high-voltage AC motor lines, and ensure the HMI chassis is connected directly to a Class D ground (resistance of 100 Ohms or less).
Prepare the mounting panel cut with the exact dimensions of 153 mm x 121 mm. Ensure the mounting plate thickness is within 1.0 mm to 5.0 mm to ensure appropriate gasket compression.
Verify that the waterproof packing strip is securely seated within the channel on the rear bezel of the HMI to guarantee an IP67F dust and liquid seal.
Insert the GT1055-QSBD into the cutout and tighten the four included mounting brackets from the rear. Use a torque rating of 0.20 to 0.25 N·m to prevent warping the plastic HMI frame.
Terminate the 24V DC power conductors using M3 spade terminals (RAV1.25-3 or V2-N3A). Tighten the terminal block screws to a torque spec of 0.5 to 0.8 N·m.
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Returns & Warranty
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| Country of origin |
United States
|