G - Physics – 06 – F
Patent
G - Physics
06
F
354/233
G06F 13/14 (2006.01) G05B 19/05 (2006.01)
Patent
CA 2013668
30-GF-1025 ABSTRACT OF THE DISCLOSURE A method is provided for configuring a programmable logic controller (PLC) wherein the PLC verifies that the actual I/O hardware configuration of the PLC matches an I/O configuration specified by the user prior to running a control program on the PLC. The I/O configuration supplied by the user is collected in a configuration information file. The match test between the actual I/O hardware configuration and the configuration file is performed both before the control program is run on the PLC and continuously during the execution of the control program. Depending on whether or not the user has set a fatal fault flag, if a mismatch occurs at any time between the actual I/O configuration and the requested I/O configuration in the configuration information file, then the PLC either issues a halt or continues to execute the control program while providing diagnostic/error message information to the user. Advantageously, any memory space in the PLC memory which is not needed to fill the demands of the I/O request in the configuration information file remains free for other PLC tasks.
Lacy Andrew M.
Sexton Daniel W.
Craig Wilson And Company
Ge Fanuc Automation North America Inc.
Lacy Andrew M.
Sexton Daniel W.
LandOfFree
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