The Emerson PACSystems RSTi-EP CPE215 (EPXCPE215) is the mid-range entry in the CPE200 compact IIoT PAC family and the first model in the series to include DNP3 outstation protocol support. With 1.5MB of battery-less NVRAM and capacity for 32 local RSTi-EP I/O slices plus 32 remote PROFINET devices, it targets medium-to-large machine control applications that need utility SCADA integration.

What does the CPE215 add over the CPE210?

Three meaningful upgrades: user memory grows from 1MB to 1.5MB, local I/O capacity doubles from 16 to 32 RSTi-EP slices, and DNP3 outstation is enabled — a protocol widely used in electric power, water/wastewater, and oil & gas SCADA systems. The third Gigabit Ethernet port, embedded PROFINET controller on LAN2, and OPC UA Secure server are common to both models, as are the −40°C to +70°C operating range and Achilles Level 2 cybersecurity certification.

What programming and security features are shared across the CPE200 series?

All CPE200 controllers run the PACSystems runtime with support for ladder diagram, function block diagram, structured text, and C. Up to 768 program blocks (128KB each), online editing, and USB/microSD program transfer are standard. Security features include Secure Boot, TPM-backed hardware root of trust, encrypted firmware updates, and ACL-based firewall — all validated to Achilles Level 2. The battery-less NVRAM design eliminates periodic battery replacement across the entire service life.