Safety programmable logic controller

Details Safety programmable logic controller Safety programmable logic controller

2007-10-23

2007-10-23

Hartman, Jr., Ronald D (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Sequential or selective

C700S018000, C700S019000, C700S021000, C700S086000, C717S107000, C717S108000

Reexamination Certificate

active

11484655

ABSTRACT:
The function block memory unit stores a plurality of function blocks by programming each ladder circuit for computing output signals which has to be determined based on input signals from each safety device according to a connection specification of the safety device. The ladder circuit satisfies a predetermined safety standard, and thus, the function blocks satisfying the safety standard are used. The program link unit sequentially links each function block received from the function block memory unit based on the ID number of each I/O module to automatically create the safety program. The corresponding function block can be uniquely determined based on the ID number.

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U.S. Appl. No. 11/484,655, filed Jul. 12, 2006, Niwa.
U.S. Appl. No. 11/493,521, filed Jul. 27, 2006, Araki et al.

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