Controllers use standby manual stations, enabling replacement of internal instruments while maintaining operation output. Individual control system loops can be upgraded or replaced without shutting down the plant. Controllers can indicate measurement values and perform output operations even when device errors occur.

In December 2001, we updated the design of our rack instruments, releasing the Style R models. There are now 7 Style R models. All have completely interchangeable I/O specifications, terminal arrays and shapes. They can be replaced with the latest devices just by replacing the internal instruments, leaving the wiring intact.

Instruments used with panel instruments and rack instruments.