D2-260 CPU, 30.4k words total (15.8k words ladder - flash memory, 14.6k words V-memory), RLL/RLLPLUS programming, real time clock/calendar, two built-in RS-232C ports. Bottom port also supports Remote I/O Master, DirectNET Master/Slave RS-422, Modbus RTU Master/Slave RS-485/RS-422, and ASCII In/Out. Advanced instruction set includes up to 16 PID loops, ASCII In/Out instructions, and Modbus RTU instructions. Also supports new DL205 -1 local base expansion, up to four additional bases. Requires DirectSOFT Release 4.0 or later for programming. Battery not included. See D2-USER-M for manual.