SY/MAX Class 8020 SCP631 Schneider Electric Processor

The Schneider Electric / Square D SY/MAX Class 8020 600 Series Processors may be installed into any SY/MAX digital or register rack assembly. A versatile and powerful instruction set allows the Model 600 to perform over 100 functions. In the SCP-631, up to 16,000 words of user programming are available for user programs, while the SCP-632 has a nominal memory size of 26,000 words. A math coprocessor is standard in both Model 600 versions to perform floating-point math operations.

An additional feature in the Model 600 is the processor-to-processor communication capability known as the SY/PEER Communication Link. This 10 megabit per second, masterless serial communication link allows for transfer of register and control data between other Model 600 processors on the SY/PEER Link. A single SY/PEER Link supports up to 16 concurrently operating Model 600s and allows sharing of information without having to consider serial communications traffic and the impact on scan time associated with conventional serial data transfer.

The Model 600 offers a real-time clock/calendar that may be used for interval timing of task execution and scanning operations. The clock/calendar and processor memory are additionally supported by an onboard lithium battery that allows the clock accuracy and contents of memory to be maintained when power is removed from the Model 600. The charge levels for the onboard lithium battery and the batteries in the SY/MAX power supply are monitored, and a front panel "BATTERY LOW" LED indicates when either or both batteries require replacement.