In 2012, Rockwell Automation released the 5370 L1, L2, and L3 (Bulletin 1769) controllers, which provided a low-cost, Ethernet/IP-enabled, high-performance controller in a 40 percent-smaller form factor. The 5370 CompactLogix controllers represent the fourth-generation CompactLogix series release. The CompactLogix 5370 series controller provides many of the same enhancements that the ControlLogix 5570 (Series 7, L7) provided over the ControlLogix 5560 (Series 6, L6), including the following:
- Twice the performance capability due to a more powerful dual-core CPU
- Adoption of modern SDRAM memory
- The replacement of the 9-pin serial port with a USB 2.0 port (programs transfer 200 times faster over USB 2.0 than the serial port)
- The replacement of the CompactFlash memory card with a Secure Digital(SD) memory card
- Added the Energy Storage Module(ESM) and removed the need for a lithium battery ...