Square D 8020 SCP111 SY MAX MODEL 100 Controller

The Square D SY/MAX Model 100 8020 SCP111 Controller is a 20‑point Model 100 programmable processor in Schneider Electric's SY/MAX 8020 class, designed for compact industrial control tasks. The SCP111 variant identifies it as the 8020 SCP111 Model 100 Processor, specified for 120 VAC operation and supplied without a memory module. As part of the SY/MAX Model 100 family, this controller provides programmable logic functionality for discrete control and sequencing in automation environments, and is described in vendor catalogs and instruction bulletins as a Model 100 PLC processor within the 8020 lineage. Schneider Electric guides the 8020 family with upgrade paths, noting that older 8020 SCP blocks such as SCP311/312/313/321/322/323 can be replaced by the 8020SCP401, reflecting the evolution of this hardware over time. In practice, 8020 SCP111 devices appear in legacy automation inventories and are documented as 20 I/O PLC processors designed for use with the Model 100 ecosystem, typically powered from standard mains and sold without a memory module installed.