Bulletin 1785 PLC-5® programmable logic controllers (PLCs) offer flexibility in programming, network, and I/O Designed for larger sequential and regulatory control applications with specialized I/O requirements, PLC-5 control systems bring together existing and new system through networks such as EtherNet/IP™, ControlNet™, and DeviceNet™.  Embedded network ports in PLC-5 controllers enable connectivity to a wide range of devices including MicroLogix™, SLC™ 500, CompactLogix™, and ControlLogix® controllers, letting you expand your control system without additional training investments