IIRO_8 - ACCES I/O Products, Inc.
Contents
1. r l puteum 1 jr pc ss ia tg eee ea xn EE 1 esenea a et ET I E wa k kus S YE D I I I I E 2 sss sue Ecos prec m HIM NET Eee CER BE RE as 0 1 SRRA bonad Lo 2 2 t a 3 2 USER MANU AL ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL ADDRESS SELECTION IIRO 8 occupies four consecutive addresses I O space although only two addresses are used The base or starting address can be selected anywhere within the I O address range 100 3FF except 1F0 through 1F8 for AT s and 200 3FF for XT s provided that it does not cause an overlap with other functions If the addresses of two installed functions overlap you will experience unpredictable computer behavior The FINDBASE program supplied by ACCES will assist you in selecting a base address that will avoid this conflict ADDRESS ASSIGNMENTS FOR 286 386 486 COMPUTERS 000 01F DMA Controller 1 020 03F INT Controller 1 Master 040 05F Timer 060 06F 8042 Keyboard 070 07F Real Time Clock NMI mask 080 09F DMA Page Register 0A0 0BF INT Controller 2 0CO 0DF DMA Controller 2 OFO Clear Math Processor Busy OF1 Reset Coprocessor OF8 0FF Arithmetic Processor 1F0 1F8 Fixed Disk 200 207 Game 278 27F Parallel Printer Port 2 2F8 2FF Asynchronous Comm n Secondary 300 31F Prototype Card 360 36F Res2. outportb Base 0x81 Example Read back the state of the relays X inportb Base relay register data to X printf 02x display results Example Read the digital inputs Y inportb Base 1 digital input register to Y 5 2 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL SOFTWARE Utility software provided on CD with the IIRO 8 is the base address locator an illustrated setup program and a sample program The sample program sequentially turns on each relay until all are on and then sequentially turns them off After each relay is turned on the relay states are read back the opto isolated inputs are read and the data are displayed The sample programs are in forms suitable for use with QuickBASIC C and Pascal The programs as follows FINDBASE Program locates active and available port addresses SETUP IIRO 8 Board Setup Program CSAMPLES SAMPLE1 _ This sample program will sequentially turn on all bits of the relay input and sequentially turns them off Each time it sets a new bit both the relay output and the relay input are read and the data displayed This demonstrates how to read and write to a port and to use the read back function of the board BSAMPLES SAMPLE1 Same sample Quickbasic 6 1 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL CONNECTOR PIN ASSIGNMENTS Analog and digital I O signals are connected to the IIRO 8 via a 37 pin D type connector that e
3. at the base address BLOCK DIAGRAM FILTER ADDRESS ENABLE SELECT SWITCH SWITCH y ISOLATED INPUT 0 ADDRESS AND o e 5 ISOLATED INPUT 1 CONTROL m ISOLATED INPUT 2 INPUT Voc OUTPUT F REGISTER ISOLATED REGISTER INPUT 3 Z WITH WITH ISOLATED SWITCHABLE READBACK INPUT 4 FILTERS CHANGE OF ves STATE DETECT ISOLATED INPUT 5 BUS BUFFERS ISOLATED INTERRUPT INPUT 6 SELECT Yi JUMPERS ISOLATED INPUT 7 COMPUTER ISA BUS E w EM N Ax 99900009 2 2 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL OPTION SELECTION FILTER RESPONSE SWITCH DIP switch S2 is used to selectinput filtering on a channel by channel basis When S2 1 is ON additional filtering is introduced for input bit 0 S2 2 for bit 1 etc Switch Section Bit Filtered This additional filtering provides a slower response as described previously and should be used when AC inputs are applied Note also as previously described that the filters can be globally activated or de activated under software control at base address 3 INTERRUPTS Select the desired interrupt level by installing a jumper at one of the locations marked IRQxx An interrupt is asserted by the IIRO 8 card when an input data bit changes state if software enabled as previously described 3 1 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 OPTION SELECTION MAP
4. state change To enable this interrupt capability read at base address 2 To disable interrupts write at base address 2 or remove the jumper that selects interrupt level IRQ2 through IRQ7 To clear an IRQ write to base address 1 RELAY OUTPUTS At power up all relays are initialized in the de energized state The current state of the relays can be determined at any time by a read operation at the Base Address The relay outputs are controlled by writing to the Base Address Data are written to all eight relays as a single byte Each bit within the byte controls a specific relay A 1 energizes the corresponding relay and a O turns it off Bit Position D7 6 D5 f D4 D3 p D DO Relay OP6 OP5 OP4 OP2 OPO 5 1 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL For example if bit D5 is turned on by writing hex 20 to the base address then the relay that controls OP5 is energized closing the associated normally open contacts All other relays would be de energized and their normally closed contacts would be closed PROGRAMMING EXAMPLES No driver software is provided with IIRO 8 because programming is very simple and can be accomplished most efficiently using direct I O instructions in the language that you are using The following examples are in C but are readily translated into other languages Example Turn on OPO and OP7 Base 0x300 Base address
5. NSE SWITCH 3 1 INTERRUPTS Z Q aE ari dur dur dudar mcr iis 3 1 OPTION SELECTION MAP 3 2 ADDRESS SELECTION 4 1 ADDRESS ASSIGNMENTS FOR 286 386 486 COMPUTERS 4 1 PROGRAMMING 5 1 DIGITAE INPUTS ODER 5 1 RELAY OUTPUTS icem UC Ou UO CO CURAS 5 1 PROGRAMMING EXAMPLES 5 2 SOR IWARE 5 conoscono ono moneo noon 6 1 CONNECTOR PIN ASSIGNMENTS 7 1 8 1 WARRANTY stretches tee gud 9 1 USER MANU AL ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL INSTALLING THE CARD Before installing the card carefully read the ADDRESS SELECTION and OPTION SELECTION Sections of this manual and configure the card according to your requirements Use the special software program called SETUP provided on CD with the card It supplies visual aids to configure all areas of the board Be especially careful with address selection Ifthe addresses of two installed functions overlap you will experience unpredictable computer behavior If unsure what locations are available you can use the FINDBASE program provided to locate blocks of available addresses To install the card 1 Remove power from the computer 2 Remove the computer cover Remove blank I O backplate 4 Install jumpers for
6. ed by warranty Warranty commences with equipment ship ment Following Years Throughout your equipment s lifetime ACCES stands ready to provide on site or in plant service at reasonable rates similar to those of other manufacturers in the industry EQUIPMENT NOT MANUFACTURED BY ACCES Equipment provided but not manufactured by ACCES is warranted and will be repaired according to the terms and conditions of the respective equipment manufacturer s warranty GENERAL Under this Warranty liability of ACCES is limited to replacing repairing or issuing credit at ACCES discretion for any products which are proved to be defective during the warranty period In no case is ACCES liable for consequential or special damage arising from use or misuse of our product The customer is responsible for all charges caused by modifications or additions to ACCES equipment not approved in writing by ACCES or ifin ACCES opinion the equipment has been subjected to abnormal use Abnormal use for purposes of this warranty is defined as any use to which the equipment is exposed other than that use specified or intended as evidenced by purchase or sales representation Other than the above no other warranty expressed or implied shall apply to any and all such equipment furnished or sold by ACCES 9 1
7. erved 378 37F Parallel Printer Port 1 380 38F SDLC or Binary Synchronous Comm n 2 3A0 3AF Binary Synchronous Comm n 1 3BO 3BF Monochrome Display Printer 3C0 3CE Local Area Network 3D0 3DF Color Graphic Monitor 3F0 3F7 Floppy Diskette Controller 3F8 3FF Asynchronous Comm n Primary The IIRO 8 base address is set up by DIP switch S1 That switch controls address bits A2 through A9 Lines A1 and 0 are used on the card to control individual registers How these two lines are used is described in the Programming section of this manual To determine how to set these switches for a desired hex code address refer to the SETUP program provided with the card If you prefer to determine proper switch settings yourself first convert the hex code address to binary form Then for each 0 set the corresponding switch to ON and for each 1 set the corresponding switch to OFF 4 1 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL The following example illustrates switch selection corresponding to hex 300 or binary 11 0000 00xx The xx represents address lines A1 and A0 used on the card to select individual registers as described in the Programming section of this manual ras Hex Code 3 mz Factors 2 1 i Representation 1 1 eje Controlled A9 A8 Carefully review the address selection reference table on the preceding page before selecting the card address If the addresses of
8. f ACCES I O PRODUCTS INC va 10623 Roselle St San Diego CA 92121 Tel 619 550 9559 FAX 619 550 7322 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD MODEL ITRO 8 USER MANUAL File MIIRO 8 d1 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL NOTICES The information in this document is provided for reference only ACCES I O PRODUCTS INC does not assume any liability arising out of the application or use of the information or products described herein This document may contain or reference information and products protected by copyrights or patents and does not convey any license under the patent rights of ACCES nor the rights of others IBM PC PC XT and PC AT are registered trademarks of the International Business Machines Corporation Printed in USA Copyright 1998 by ACCES I O PRODUCTS INC 10623 Roselle St San Diego CA 92121 All rights reserved ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 INSTALLATION 1 1 CD INSTALLATION 1 1 3 5 INCH DISKETTE INSTALLATION 1 1 DIRECTORIES CREATED ON THE HARD DISK 1 2 INSTALLING THE CARD 1 4 FUNCTIONAL DESCRIPTION 2 1 INPUTS 2 1 INTERRUPTS Ea 2 1 OUTPUTS d 2 2 BLOCK DIAGRAM 2 2 OPTION SELECTION 3 1 FILTER RESPO
9. llation of level select jumpers interrupts are generated when digital inputs change state POWER REQUIRED 5VDC 0 5A all relays ON ENVIRONMENTAL Ambient Temperature Operating 0 to 50 C Storage 20 to 70 C Humidity 0 to 90 non condensing Weight Approx 8 oz 8 2 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL WARRANTY Prior to shipment ACCES equipment is thoroughly inspected and tested to applicable specifications However should equipment failure occur ACCES assures its customers that prompt service and support will be available All equipment originally manufactured by ACCES which is found to be defective will be repaired or replaced subject to the following considerations TERMS AND CONDITIONS If a unit is suspected of failure contact ACCES Customer Service department Be prepared to give the model number serial number and a description of the failure symptom s We may suggest some simple tests to confirm the failure We will assign a Return Material Authorization RMA number which must appear on the outer label of the return package All units components should be properly packed for handling and returned with freight prepaid to the ACCES designated Service Center and will be returned to the customer s user s site freight prepaid and invoiced COVERAGE First Three Years Returned unit part will be repaired and or replaced at ACCES option with no charge for labor or parts not exclud
10. r must be selected for AC inputs in order to eliminate response to zero crossings The filter is also valuable for use with slow DC input signals in a noisy environment The filter may be switched out for DC inputs in orderto obtain faster response Filters are individually selected by switch S2 IPO is controlled by FO IP1 by F1 IP2 by F2 etc The filters are switched into the circuit when the switch is moved to the ON position The filters may also be controlled globally under software control All filters may be turned on by a read at base address 3 Filters that have been activated by software may be disabled by a write to base address 3 INTERRUPTS When enabled by a software read to base address 2 and when a jumper is installed to select one of the interrupt levels IRQ2 7 IRQ10 12 and IRQ14 15 the IIRO 8 card asserts an interrupt whenever any of the inputs changes state Once an interrupt has been generated and serviced it must be cleared A software write to base address 1 will clear an interrupt This interrupt capability may be disabled by a software write to base address 2 2 1 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU OUTPUTS The electromechanical relay outputs are comprised of five FORM C SPDT outputs and three FORMA SPST normally open type The relays are all de energized at power on Datato the relays is latched by a write to the base address On off status of the relays can be read back by a read
11. selected options See OPTION SELECTION 5 Select the base address on the card See ADDRESS SELECTION 6 Install the card in an I O expansion slot Make sure that the card mounting bracket is properly screwed into place and that there is a positive chassis ground 7 Inspect for proper fit of the card and cables and tighten screws 8 Replace the computer cover 1 1 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL FUNCTIONAL DESCRIPTION The 8 is a half size card that provides isolated input and output interface for PC XT AT and compatible computers The card provides eight optically isolated inputs for AC or DC control signals and eight electromechanical relay outputs IIRO 8 occupies four consecutive addresses I O space Read and write operations are done on an 8 bit byte oriented basis INPUTS The isolated inputs can be driven by either AC or DC signals and are not polarity sensitive Input signals are rectified by a diode bridge and connected across an LED diode of an opto isolator A 470 ohm resistor in series dissipates unused power Standard 12 24 AC control transformer outputs can be accepted as well as DC voltages The input voltage range is 5 to 24 volts rms External resistors connected in series may be used to extend the input voltage range Each input circuit contains a switchable slow fast filter that has a 10 millisecond time constant Without filtering the response is 20 uSec The filte
12. two installed functions overlap you will experience unpredictable computer behavior 4 2 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL PROGRAMMING The IIRO 8 card occupies four consecutive addresses in PC I O space The base or starting address is selected during installation and will fall on a four bit boundary IIRO 8 read and write functions as follows Address Base 0 Read Relay Output Write Relay Output Base 1 Read Isolated Inputs Clear Interrupt Base 2 Enable IRQ Disable IRQ Base 3 Activate Filter Deactivate Filter DIGITAL INPUTS Digital input states are read as a single byte from the port at Base Address 1 Each of the eight bits within the byte corresponds to a particular digital input A 1 signifies that the input is energized and a 0 signifies that the input is de energized Bit Position D7 De D5 D4 D3 D2 D DO Digital Input IP7 IP6 1 5 IP4 ips IP2 IP41 IPO The card response to inputs is rated at 20 uSec or faster Sometimes it is necessary to slow down that response to accommodate AC inputs or in noisy environments The 10 mSec filter can be enabled for all inputs in software by reading at base address 3 or disabled by writing at base address 3 The card supports interrupts on change of state of digital inputs Thus itis not necessary to continuously poll inputs by reading at base address 1 to detect any
13. xtends through the back of the computer case The mating connector is an AMP 747304 1 or equivalent The wiring may be directly from the signal sources or may be on ribbon cable from screw terminal accessory boards such as the STA 37 Pin assignments are as follows PIN IPO jDigtallnnputBitO 10 13 14 15 16 17 18 19 20 IP6 jDigtallnputBit 23 27 IPO Digital Input BitO PIN _ 6 8 BEES 13 MCN 105 18 19 20 23 7 1 ISOLATED DIGITAL INPUT RELAY OUTPUT CARD IIRO 8 USER MANU AL SPECIFICATION DIGITAL INPUTS Number of inputs Eight Type Non polarized optically isolated from each other and from the computer not TTL CMOS compatible Voltage Range 5 to 24V DC or AC 50 to 1000 Hz Isolation 500V channel to ground or channel to channel Input Resistance 470 ohms in series with two diodes and an LED Response Time 10 mSec w filter 20 uSec w o filter RELAY OUTPUTS Number of outputs Eight Contact Rating 2A carry current bifurcated gold clad silver palladium Contact Arrangement Channels 0 4 are SPDT Form C and channels 5 7 are SPST Form A Contact Resistance Initial 100 millionms maximum Contact Life mech l 10 million operations minimum elect 5 million operations minimum at full load Operating Time 2 milliseconds maximum Release Time 1 milliseconds maximum INTERRUPTS When enabled by software and by insta
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