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.
Operating as a dual-preset digital control device, the Omron H7CX-AWD1-N regulates industrial process timing and counting applications across high-speed manufacturing lines. This highly configurable 1/16 DIN instrument functions seamlessly as a 1-stage counter, 2-stage counter, total counter, batch counter, dual counter, or tachometer. Engineered with a negative transmissive LCD display, it provides highly legible process value readouts that dynamically shift color (red/green) based on output status to give operators immediate visual feedback on the shop floor.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Omron |
| Model Number | H7CX-AWD1-N |
| Series | H7CX-N |
| Type | Standard Type (Screw Terminal) |
| Digits | 6 Digits (-99999 to 999999) |
| Settings | 2-Stage Presettings |
| Supply Voltage | 12 to 24 VDC / 24 VAC at 50/60 Hz |
| Output Type | Contact (SPST-NO) and Transistor (NPN Open Collector) Outputs |
| Max. Count Speed | Selectable 30 Hz or 5 kHz |
| Display | 7-segment negative transmissive LCD with red/green backlight change |
| Operating Temperature | -10 to 55 degC (with no icing or condensation) |
| Product Dimensions | 48 mm x 48 mm (1/16 DIN front panel) x 84 mm (depth) |
| Shipping Weight (Calculated) | 0.25 kg |
The "H7CX-AWD1-N" replaces older generation "H7CX-AWD1" non-N models. Key benefits of the "-N" suffix include enhanced key protection parameter isolation and upgraded, brighter display segments. When executing a migration, note that physical panel cutout sizing of 45x45 mm remains completely identical, requiring zero mechanical mounting alterations.
When deploying the unit on low-voltage AC/DC systems (12-24 VDC / 24 VAC), verify that common-mode electrical noise from neighboring Variable Frequency Drives (VFDs) is minimized. In electrically noisy environments, input signal lines (CP1/CP2) should be physically routed away from the main power feed lines to prevent false counts or microsecond input triggers.
Always configure the counting speed selector based on the sensor element type. If using mechanical limit switches or relay contacts as count inputs, lock the speed limit parameter to 30 Hz. Running a mechanical switch at the default 5 kHz setting will cause contact bounce to register as multiple false counts. Reserve the 5 kHz frequency setting exclusively for high-speed proximity switches or rotary encoders.
CRITICAL WARNING:
Ensure all primary input power is fully de-energized and locked out before attempting wire insertion or extraction on the back terminal block. Contact with energized terminals on low-voltage lines can cause damage to integrated digital logic boards if static discharge occurs.
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Returns & Warranty

Operating as a dual-preset digital control device, the Omron H7CX-AWD1-N regulates industrial process timing and counting applications across high-speed manufacturing lines. This highly configurable 1/16 DIN instrument functions seamlessly as a 1-stage counter, 2-stage counter, total counter, batch counter, dual counter, or tachometer. Engineered with a negative transmissive LCD display, it provides highly legible process value readouts that dynamically shift color (red/green) based on output status to give operators immediate visual feedback on the shop floor.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Omron |
| Model Number | H7CX-AWD1-N |
| Series | H7CX-N |
| Type | Standard Type (Screw Terminal) |
| Digits | 6 Digits (-99999 to 999999) |
| Settings | 2-Stage Presettings |
| Supply Voltage | 12 to 24 VDC / 24 VAC at 50/60 Hz |
| Output Type | Contact (SPST-NO) and Transistor (NPN Open Collector) Outputs |
| Max. Count Speed | Selectable 30 Hz or 5 kHz |
| Display | 7-segment negative transmissive LCD with red/green backlight change |
| Operating Temperature | -10 to 55 degC (with no icing or condensation) |
| Product Dimensions | 48 mm x 48 mm (1/16 DIN front panel) x 84 mm (depth) |
| Shipping Weight (Calculated) | 0.25 kg |
The "H7CX-AWD1-N" replaces older generation "H7CX-AWD1" non-N models. Key benefits of the "-N" suffix include enhanced key protection parameter isolation and upgraded, brighter display segments. When executing a migration, note that physical panel cutout sizing of 45x45 mm remains completely identical, requiring zero mechanical mounting alterations.
When deploying the unit on low-voltage AC/DC systems (12-24 VDC / 24 VAC), verify that common-mode electrical noise from neighboring Variable Frequency Drives (VFDs) is minimized. In electrically noisy environments, input signal lines (CP1/CP2) should be physically routed away from the main power feed lines to prevent false counts or microsecond input triggers.
Always configure the counting speed selector based on the sensor element type. If using mechanical limit switches or relay contacts as count inputs, lock the speed limit parameter to 30 Hz. Running a mechanical switch at the default 5 kHz setting will cause contact bounce to register as multiple false counts. Reserve the 5 kHz frequency setting exclusively for high-speed proximity switches or rotary encoders.
CRITICAL WARNING:
Ensure all primary input power is fully de-energized and locked out before attempting wire insertion or extraction on the back terminal block. Contact with energized terminals on low-voltage lines can cause damage to integrated digital logic boards if static discharge occurs.
Global Express Shipping
Returns & Warranty
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| Country of origin |
Japan
|