Mini-programmable controller

Details Mini-programmable controller Mini-programmable controller

G - Physics

06

F

354/230.71

G06F 9/22 (2006.01) G05B 19/05 (2006.01) G05B 19/414 (2006.01)

Patent

CA 1144655

MINI-PROGRAMMABLE CONTROLLER Abstract of the Disclosure A small, low-cost programmable controller is pro- grammed with both bit-oriented and word-oriented program instructions that are stored in a main memory. A micro- processor couples each program instruction to a respective interpreter routine of machine instructions stored in an interpreter memory. Bit-oriented program instructions with a common operation code but different bit-pointer codes are coupled to their own respective interpreter routines. The program instructions have operation codes and bit pointer codes that are assigned by a program panel, and are then translated by a translator PROM as they are coupled to an interpreter routine. Operand addresses are read through the translator PROM unchanged. Error-locating circuitry assists in detecting faulty chips in the main memory as the control program is executed. The hardware required to execute the control program is minimized, while the translator PROM allows the processor unit to be used with prior program panels.

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