Model DIO32B 32 Channel Isolated Digital I/O FEATURES � 16-Channel Optically Isolated Input � Non-Destructive Read Back of Outputs � High Reliability 10VA DIP Reed Relays � Power and Ground Provided on Connector � Socketed DIP Resistor Allows User Specified Input Range DESCRIPTION The Model DIO32B offer 32 channels of isolated Ports C and D each offer 8 bits of reed relay output digital I/O for XT and AT compatible systems. The card for controlling the on/off status of external devices such is structured as 4 ports of 8 channels each. Ports A and as servos, lights, buzzers, or other low current level B each offer 8 bits of optically isloated inputs. Each input applications. These ports have non-destructive read- is isolated from ground, all other channels and from the back capability, i.e. after writing a value to the port, its host PC ground. Isolation is effective up to 400VDC or status can be read back into the computer to determine if peak AC. Ports A and B are input ports only. Each input it has responded properly. The relays are normally open, channel has two leads, hi and low, with current limiting �NO�, Form A, and close when energized by the computer resistors to limit the input current to the opto-isolator. writing a �1� to the appropriate port bit. After the current limiting resistor, the signal is applied to a bridge rectifier to convert AC signals to DC status. The signal is then applied to the opto-isolator for reading by the computer. SPECIFICATIONS Maximum Input Volts Channels 16 Input 12V AC/DC 16 Output I/O Address Requirement Input Range 4 I/O Bytes 6-12 VAC/VDC Interrupts Supported Input Isolation 2-7 Optical, 400V Power Required Input Frequency Response +5VDC @ 0.6A DC to 5000Hz Temperature Throughput Operating: 0 to 50�C 660Hz Storage: -20 to 70�C Relative Humidity 10-90%, non-condensing MTBF 150,000 Hrs 1 Document 1092, 8/21/97 SPECIFICATIONS PINOUT CONNECTIONS OUTPUT RELAY SPECS & Operations 31 200M Power Capacity. 10VA, Resistive Load . Connectors .On-board: DB-37 female 2nd Bracket: DB-37 male . Software The software that is provided with this card. supports several different models. Those models include the DIO32B, DIO16, 16ISO, 16REL,. 16REL-L and the 32REL-B. The examples are written around the DIO32B, but the the DIO16,. 16ISO, and 16REL are just subsets of the DIO32B. For example, the 16ISO will function. with code written for the input section of the DIO32B. Additional code is provide for the 16REL-L, DIO16 and 32REL-B in separate directories.. Operating Systems Supported . DOS 3.x or greater .Languages Supported Microsoft C V7.0 or greater . Microsoft Quick BASIC V4.5 x86 Assembler . Example Programs .Demo programs are provided in both interpretive and compiled BASIC. There are also demo .routines in C. Both the compiled and linked versions are included. An assembly language . driver is also included with source code. ORDERING GUIDE Model DIO32B 32 Channel Board, cable/connector assembly for output connector ACCESSORIES Model UTB-K Model C1900 Termination board/Metal enclosure 18" (457mm) cable, male to female Model 2M37DSM Model C1800 37 pin header that converts D-sub 18" (457mm) cable, female to female mini connectors to field wiring 39ROWV 39ROWV 3*URXQG 3%LW’3RUW 3%LW&3RUW XPEHULQ.5HOD\%LW3RUW 3LQ2XWVRQQHFWRU0DOH’%