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 IS200TBCIS2C is a contact input termination board engineered for the Mark VI Speedtronic turbine control system assembly. This board is designed to interface field dry contact wiring with core system control cards, accepting 24 total dry contact inputs. The contact input voltage loop is powered by a floating power supply within the turbine control infrastructure. To prevent electrical disturbance, each dry contact channel is optically isolated and sampled at system frame rate for precise control action. The board facilitates signal fanning, distributing the input voltage status to three separate VME board racks via three dedicated interface connectors. It is built as a domestic hardware assembly featuring an S-style protective PCB coating, providing cross-system compatibility with VCCC and single-slot VCRC contact input cards.
| Parameter | Value |
|---|---|
| Original Manufacturer | GE Industrial Systems |
| Part Number | IS200TBCIS2C |
| Series | Mark VI Speedtronic |
| Functional Acronym | TBCI |
| Functional Description | Contact Input Termination Board |
| Total Inputs | 24 dry contact inputs |
| Signal Fanning | Up to 3 VME board racks |
| PCB Coating | S-style PCB coating |
| Primary Functional Revision | A |
| Connector Label | Function |
|---|---|
| JR1 | Interfaces with the J3 connection point on the first VCCC/VCRC card rack |
| JS1 | Interfaces with the J3 connection point on the second VCCC/VCRC card rack |
| JT1 | Interfaces with the J3 connection point on the third VCCC/VCRC card rack |
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Returns & Warranty



The IS200TBCIS2C is a contact input termination board engineered for the Mark VI Speedtronic turbine control system assembly. This board is designed to interface field dry contact wiring with core system control cards, accepting 24 total dry contact inputs. The contact input voltage loop is powered by a floating power supply within the turbine control infrastructure. To prevent electrical disturbance, each dry contact channel is optically isolated and sampled at system frame rate for precise control action. The board facilitates signal fanning, distributing the input voltage status to three separate VME board racks via three dedicated interface connectors. It is built as a domestic hardware assembly featuring an S-style protective PCB coating, providing cross-system compatibility with VCCC and single-slot VCRC contact input cards.
| Parameter | Value |
|---|---|
| Original Manufacturer | GE Industrial Systems |
| Part Number | IS200TBCIS2C |
| Series | Mark VI Speedtronic |
| Functional Acronym | TBCI |
| Functional Description | Contact Input Termination Board |
| Total Inputs | 24 dry contact inputs |
| Signal Fanning | Up to 3 VME board racks |
| PCB Coating | S-style PCB coating |
| Primary Functional Revision | A |
| Connector Label | Function |
|---|---|
| JR1 | Interfaces with the J3 connection point on the first VCCC/VCRC card rack |
| JS1 | Interfaces with the J3 connection point on the second VCCC/VCRC card rack |
| JT1 | Interfaces with the J3 connection point on the third VCCC/VCRC card rack |
Global Express Shipping
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 |
Green
|
| Country of origin |
United States
|
| Power source |
DC Power
|