Inventor
ZIFFERER SCOTT C
US7 patents
Patents
7 patentsUS5321829AJun 14, 1994
Graphical interfaces for monitoring ladder logic programs
ICOM INC131 citations96
US4991076AFeb 5, 1991
Method and apparatus for creating custom displays for monitoring ladder logic programs
ICOM INC83 citations94
US5349518ASep 20, 1994
Method and apparatus for symbolic ladder logic programming with automatic attachment of addresses
ICOM INC46 citations91
US5276811AJan 4, 1994
Method for emulating programmable logic controller by exchanging information between debug program which emulates I/O devices and ladder logic program
ICOM INC30 citations91
US5267145ANov 30, 1993
Method and apparatus for program navigation and editing for ladder logic programs by determining which instructions reference a selected data element address
ICOM INC47 citations91
US5243511ASep 7, 1993
Method and apparatus for block move re-addressing in ladder logic programs
ICOM INC30 citations91
US5127099AJun 30, 1992
Method and apparatus for securing access to a ladder logic programming and monitoring system
ICOM INC46 citations91