Product Description:

The 105-524002-01 card is manufactured by Pacific Scientific as part of the 105 Motion Control Cards series. It is mounted on a host backplane so test benches and development stations can mimic field wiring without energizing the actual machine. Inside an automation cabinet, the card substitutes for physical sensors and actuators, allowing motion routines to be cycled, interlocks to be verified, and timing data to be captured before a live axis is connected. Because the board shares the same footprint and address space as other signal modules in the series, it fits into existing setups with minimal recabling.

At the electrical interface, the module is classified as an I/O Emulator Board, meaning each channel can reproduce the signal levels expected by a controller. It accepts 4 control inputs that handle enable, reset, or emergency lines, and their states are latched for firmware checks. A bank of 8 discrete inputs supplies additional status bits, while 7 discrete outputs let the host processor assert simulated relays for downstream diagnostics. All conductors terminate on a shielded D-Sub connector, which helps maintain signal quality on longer harnesses and simplifies connection layout. These resources allow edge transitions, debounce routines, and watchdog timing to be replicated entirely on the bench before code is moved to production hardware.

The board emulates the register architecture of the SC750 motion controller, so compiled firmware can run without modification during bench testing. Two high-speed channels are provided; input label IN7/Reg1 captures rising edges used for precise homing, and the logic-0 state is interpreted as Up to match the original drive cage. Complementary signals include IN8/Reg2 for fast strobes, IN16/Cntr Clk for count increments, and IN15/Cntr Rst to zero the software counter between cycles. Logic-1 is interpreted as Down, and all positions are silk-screened on the board face. The assembly is made in the U.S.A., providing clear origin identification.