About the 8020-SCP-444
The 8020-SCP-444 module is a Model 400 processor with a 16K RAM/PROM Mix with Floating Point. The 8020-SCP-444 processor was developed and manufactured by Square D to be included as part of the SY/MAX 8020 series of processors and products related to processor usage.
The 8020-SCP-444 processor has seven LED indicator lights that are located on the top of the device. These LED indicator lights are utilized in order to show the status of the 8020-SCP-444 processor unit as controlled by the user. The 8020-SCP-444 processor’s seven LED indicator lights are listed here as the following: “RUN,” “HALT,” “MEMORY,” “FORCE,” “I/O,” “BATTERY LOW,” and “WRITE PROTECT.” Below this vertical row of the seven indicator lights, there is a small battery access door that is secured by a small screw on the right side. The battery access door has black text printed onto it which reads, “BATTERY INSTALLED DATE” with a small white label where the date in which the battery is installed can be written down.
Below the small battery access door, there is a small metal key switch that has four positions. From left to right, the key switch’s position are listed here as the following: “DISABLE OUTPUTS,” “HALT,” “RUN,” and “RUN PROGRAM.” Just below the small key switch, there is a small port. This small port has white text to the right of it which reads, “PRGMR CHNL 1.” Just below this small port, there is a small white label that reads, “COMM CHNL 2.” There is a small white arrow that is pointing downward, letting the user know that the aforementioned “COMM CHNL 2” port is on the bottom part of the device.
