1084

Since the advent of programmable controllers in the early 1970's, these devices have been able to replace the hard wire relay logic control systems used in many industrial control applications. In the ensuing years, they became more powerful, replacing not only relay ladder-type control programs, but also performing non-relay functions such as timing and counting, as well as performing data manipulation and transfer. Indeed, programmable controllers have become so powerful in subsequent years, controlling virtually thousands of outputs and performing many diverse and complicated data manipulation and transfer operations that they in many circumstances could replace the minicomputer for controlling complex industrial control systems. The Modicon 1084 Programmable Controller was characteristic of these large, high-powered controllers/data processors.
Programming was in ladder and a ????? CRT programming panel was used to enter the program and for diagnostics. By current standards the 1084 was very primitive, but they did a job that nothing else could do at the time. The only one I ever saw was installed at the Hamersley Iron fines concentrator facility at Mt. Tom Price in Western Australia. This was commissioned in the late 1970's.
These used 200 series I/O.
The program could be saved/stored on magnetic tape and reloaded using the L206 tape loader.The L206 connected to the PLC via a J470 adapter and serial cable.

Extract from 1084 Patent Application