I have a customer wanting to upgrade from a GE 90-30 PLC to a GE RX3I. The PLC is used on a Gas Turbine Generator. One problem I have is that there is a C Block in the code that I have no idea what it is doing. I do not have the source code for the C Block and cannot find any references on how to dig into it. I was wondering if any of you knew what may be contained in the block that is such a secret.

 

C-blocks are used for many reasons: complex calculations, hide proprietary algroithms, improve speed of doing control. If the 90-30s are running MaxON software, then the C block contains configuration data that's updated by the MaxON configuration program. Suggest you contact the manufacturer of the control system to determine what the C-block does.

Drake Fink
Applications Engineer
GE Fanuc Intelligent Platforms, Inc.
[email protected]