The new CPUs feature two analog inputs and two outputs with ranges of
voltage up to 5VDC or current up to 20mA. The modules include two
built-in RS-232 communication ports and one RS-485 port, as well as
real-time clock and battery backup for internal SRAM. Analog CPU
modules are differentiated by their discrete I/O; all have four DC
inputs and a choice of four DC sinking, DC sourcing or relay outputs.
All CPUs are configured with easy-to-use programming software,
available as a free download. Prices for the analog CPUs start at $129.AutomationDirectwww.automationdirect.com770.889.2858