Relay Card AR-B2103 Features Contact resistance: 100m ohms max Contact ratings: AC125V/1A or DC30V/3A (Resistive Load) Operation time: 8 msec max Release time: 8 msec max Output status read back 16 LED indicator for each channel Connector: 37-pin D-type (ext. AR-B9007) Isolation: 2100VDC isolation acrosser open contacts 1400VDC isolation between coil and contacts For IBM PC/XT/AT personal computers and compatible Dimensions: 175mm x 108mm Specifications General Number of Outputs 12 Form A (SPST) and 4 Form C (SPDT) relays Max Switching Power Resistive load - AC 250VA, DC 120W, Inductive load - AC 125VA, DC 60W Max Switching Voltage 250VAC, 220VDC Max Switching Current 4A Contact Rating Resistive load - AC 125V, 1.0A or DC 30V, 3A, Inductive load - AC 125V, 0.6A or DC 30V, 2A Contact Resistance 100 milli ohms maximum (Initial value) Operate Time 8mS maximum at the rated voltage Release Time 8mS maximum at the rated voltage Bounce Time 8mS maximum Isolation Contact and coil - 1500Vrms, 2100VDC, Contact to contact - 1000Vrms, 1400VDC Life Expectancy 100 million. (Ref. 10VDC, 10ma) Varistor Voltage 140Vrms, 180VDC Varistor power 0.2W Active Indicators 16 LED I/O Address Base port switch selectable from 000H to 3FCH with increments of 4 Power Consumption [email protected] max. (All relays On), [email protected] max. (All relays On) Dimensions 175mm x 108mm Applications Control switching, Analog multiplexing, Motor starter control, Alarm control, Lighting control Registers The AR-B2103 occupies 4 consecutive addresses in the PC I/O space of which only two actually used. The base or starting address is selected during the installation procedure. The registers of the AR-B2103 are located as follows: Address Output Register Input Status Registers Base +0 Relay Port 1(write) Relay Port 1(read) Base +1 Relay Port 2(write) Relay Port 2(read) Base +2 Not Used Not Used Base +3 Not Used Not Used Note that all port are 8 bit (one byte) wide and require byte oriented write operations rather than work operations. All relays in a port are updated simultaneously. Writing a low (0) to a relay within a port deactivates the relay. Writing a high (1) to a relay activates it. The registers of the AR-B2103 are located as follows: BASE + BASE + D7 D6 D5 D4 D3 D2 D1 D0 CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1 D7 D6 D5 D4 D3 D2 CH16 CH15 CH14 CH13 CH12 CH11 D1 D0 CH10 CH9 When the output is energized, the status LED indicator will light up to indicate an active input. Programming No driver is supplied with the AR-B2103 since the program is very simple and can be accomplished most efficiently using direct I/O instructions, in whatever application language is used (i.e., Basic, C, Assembly, Pascal, etc.). For example, assume that one wishes to turn on relay channel 7. Also assume the AR-B2103 board has been set to base address 992(3E0 hex). To turn on relay channel 7, one simply writes 01000000 to base address 992. Likewise to turn on channel 10, 12 and 14 one writes 42 decimal (00101010 binary or 2A hex) to I/O address 993(3 E1 hex).The following example is the BASIC language but it can be easily been translated to other languages. Example: Assume the AR-B2103 is installed at base address 992(3E0 hex). To turn on the channel 1 and 10, write as follows: 1000BASE_PORT = &H3E0: REM Base I/O addresses 1010 OUT BASE_PORT, 1: REM Turns channel 1 ON 1020 OUT BASE_PORT+1,2: REM Turns channel 10 ON To control the desired relays but make no effect to other relays, write as follows: 2000 BASE_PORT = &H3E0 : REM Base I/O addresses 2010 PORT1 = (INP (BASE_PORT) OR1): REM Read back port 1 status and set bit of channel 1 2000 OUT BASE_PORT, PORT 1: REM Turns channel 1 ON 2030 PORT2 = (INP (BASE_PORT,1) OR2): REM Read back port 2 status and set bit of channel 10 2040 OUT BASE_PORT+1, PORT2: REM Turns channel 10 ON Ordering information: Model No. Description Accessories AR-B2103 Relay Card (1). Disk: Win31/95 Driver AR-B9007 37 pin Screw Terminal Board for AR-B2103 with 0.6m Round cable.