Kelly Pneumatics, Inc. RS232 Converter Board

Kelly Pneumatics, Inc. offers the RS232 Converter Board for its Proportional Valve and Electronic Precision Pressure Regulator product lines. The RS232 Converter Board accepts ASCII commands via a standard RS232 comport or microprocessor, allowing accurate, proportional, customized control of our products. 2 Channels 12 bit analog input 2 Channels 12 bit analog output 8 digital I/O Pulse-Width Modulation Output Analog Input Channels 2 single ended or 1 differential Analog Inputs 0V to +5V Unipolar only Analog Output Channels 2 Channels 0V to +5V D/A Converter LTC 1448 12 Bit D/A Specs DNL 0.5LSB Offset Error 15mv Output Impedance 120 ohm Short Circuit Current 120ma max Digital I/O 8 digital I/O lines (one 8 bit port) I/O line data direction is software selectable Digital I/O Current I/O line source/sink 25 ma Total current 200 ma for the 8 bit port Digital I/O Voltage Levels Input Off (0) = 0V - 0.8V Input On (1) = 2.0V - 5.0V Output Off (0) = 0.6V max. Output On (1) = 4.3V min. PWM Output PWM Freq.: 1.8KHz - 430KHz PWM duty: 0%-100% Communications RS232 (8 data bits, no parity, 1 stop bit) 50 feet maximum distance Baud Rate 9600-115.2K BPS DIP switch selectable Bandwidth 1533 SPS maximum, continuous stream mode 115,200 baud, single channel Command Protocol Simple ASCII commands Operating Power 7.5 Vdc to 15.0 Vdc, 50 ma nominal, 450 ma max