1772-LW

The Allen-Bradley 1772-LW is a Mini-PLC-2/17 processor that does not have a power supply. It has a memory size of 7.75K, 16-bit words, RAM and a data table size that ranges from 48 to 7808 floating words. It can support up to 512 total I/O and 512 analog I/O. Program scans of this processor are a minimum of 7.5 milliseconds/K and 12 milliseconds for the typical application program. I/O scans are 0.82 milliseconds for 2-slot addressing, 2 milliseconds for 1-slot addressing, and 2.15 milliseconds for 1/2-slot addressing. The 1772-LW processor requires a backplane current of 1.25 A. This processor can be installed to the leftmost slot of any 1771 I/O chassis and has a 15-pin interface port, as well as status indicators. It has an operating temperature of 0 to 60 degrees Celsius, a storage temperature of -40 to 85 degrees Celsius, and comes with a non-condensing relative humidity of 5% to 95%. The 1772-LW processor is conformally coated and uses a 1771-WN wiring arm. It has a total measurement of 4.5 x 12.4 x 6.3 inches and weighs 0.3 pounds or 0.1 kg. It features a basic instruction set that includes up to 488 counters and timers in the processors, data manipulation and comparison, relay-like instructions, three-digit math capable of addition, subtraction, multiplication, and division, and program control instructions. An advanced instruction set is also applicable for this processor, such as sequencer instructions, jump instructions and subroutine programming, data-transfer file instructions, block transfer instructions, bit shift register instructions for bit shifts, EAF functions like y +/- x, e +/- x. loge, standard deviation, reciprocal of x, averaging, clock and calendar, and PID.