RB-8 Document Part Document Reference Document Issue Level Manual cove

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Eight Channel Relay Output Card
RB-8 Document Part Document Reference Document Issue Level Manual covers PCBs identified 0127-0197 RB-8\.\0127-0197.Doc RB-8 Rev.
rights reserved. part this publication reproduced, stored retrieval system, transmitted, form means, electronic, mechanical, photocopied, recorded otherwise, without prior permission, writing, from publisher. permission contact Blue Chip Technology. Information offered this manual correct time printing. Blue Chip Technology accepts responsibility inaccuracies. This information subject change without notice. trademarks registered names acknowledged.
Blue Chip Technology Ltd. Chowley Oak, Tattenhall Chester, Cheshire 9EX. Telephone 01829 772000 Facsimile 01829 772001.
Amendment History
Issue Level
Issue Date 12/4/95 28/2/96
Author
Amendment Details Major re-write Addition information Technical Specification, front sheet. Errors corrected. RB81040. Filename .\RB-8.doc. Part number added Window front cover logo. 97/144.
09/12/97
Contents
INTRODUCTION. INSTALLATION. Setting Base Address Setting Relay Power State OPERATION. Selecting Relay Software Reading Contact Status. USER CONNECTIONS SPECIFICATION. Technical ELECTROMAGNETIC COMPATIBILITY (EMC). Specification APPENDICES. Appendix NUMBERING SYSTEMS Binary Hexadecimal Numbers Base Address Selection APPENDIX MAPS. PC/XT/AT Address PC/XT Interrupt PC/AT Interrupt Channels.
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Introduction
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INTRODUCTION
Blue Chip Technology RB-8 board provides user with eight volt-free contacts general control applications. relay contacts will handle voltages mains potential currents small voltages with current handling Amps. board facility power with various combinations normally open normally closed contacts output connector. This selection made user selectable links. operating program read back status relay contacts thereby checking that relay contact actually operated instructed. card occupies only location which both read write address. write this location sets desired relay(s) while read from this address returns contact status. Connection card screw terminals which facilitates easy connection user.
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Installation
INSTALLATION Setting Base Address
base address selection card made links header block JP9. There address line selections block ranging from HEX. Address left hand side jumper block.
address line selected there link present pins. select address example, links except should fitted. RB-8 card prior leaving factory.
Diagram Showing Address Selector Header Example shows address
Setting Relay Power State
RB-8 which contacts will power normally open normally closed state, individual contact basis. This selection made `handbag' type links card. Each link consists three positions, middle each being common pin. pins either side common marked `NO' `NC' (normally open normally closed). particular contact pair normally open, place link between common centre marked `NO'. Each relay contacts should required state prior installing card into host computer.
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Operation
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OPERATION Selecting Relay Software
Switching relays software matter writing correct pattern base address. following BASIC example demonstrates this, assuming that base address HEX.
INPUT"SELECT RELAY SWITCH RS=0 THEN VALUE=0:rem relays RS=1 THEN VALUE=1:rem RS=2 THEN VALUE=2:rem RS=3 THEN VALUE=4:rem RS=4 THEN VALUE=8:rem RS=5 THEN VALUE=16:rem RS=6 THEN VALUE=32:rem RS=7 THEN VALUE=64:rem RS=8 THEN VALUE=128:rem (&H300), VALUE:rem send value switch relay GOTO
This simple program allows single relays switch serves illustrate relationship between single relay corresponding value sent card. Since each relay controlled individual within data sent card, number relays switched simply writing correct pattern board's base address.
Reading Contact Status
RB-8 card permits user read back software status each relay contact. This signal generated from logic holding register, logic level produced second contact set. This allows software program test physical status contacts test relay failure.
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Operation
relay status determined software read board address. following example illustrates this:
RSTAT (&H300):rem read relay address RNUM RSTAT:determine relay number (active LOW) PRINT"RELAY CURRENTLY OPERATED ";RNUM;
These programs combined demonstrate relay "Set" confirmatory "Read" operation.
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Connections
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USER CONNECTIONS
user connections card made pins connector optional screw terminals) rear board. These terminals carry voltages mains potential, therefore care must exercised. Using voltages high this rear card generally recommended.
Contact
Connection Pinouts Note: left hand most connection nearest edge connector.
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Specification
SPECIFICATION
Eight channel relay contact closure/opening upon software command. Contact status read back, operating actual contacts control bits. Contacts individually selectable Normally Open (NO) Normally Closed (NC) state power
Technical
(See graph following page) Volts Volts Watts Make mSec Break mSec Make mSec Break mSec mOhm Electrical 500,000 Full Load Mechanical 50,000,000 Watts maximum (All Relays Address Male Connector (Additional Plug-In Screw Connector Available)
Relay Contact Specifications Maximum Contact Carry Current Maximum Switching Current Maximum Recommended Voltage Maximum Contact Power Rating Contact Bounce Time
Contact Response Time
Contact Resistance Contact Life (operations)
Power Consumption Address Overhead (Read/Write) Connections Card
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Specification
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CONTACT CURRENT (Amps)
Maximum Carrying Current Maximum Switching Current (DC) Switching Current (AC)
CONTACT VOLTAGE
Diagram Showing Relay Contact Rating Hatched area indicates recommended maxima.
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Electromagnetic Compatibility (EMC)
ELECTROMAGNETIC COMPATIBILITY (EMC)
This product meets requirements European Directive (89/336/EEC) eligible bear mark. been assessed operating Blue Chip Technology Icon industrial However, because board installed variety computers, certain conditions have applied ensure that compatibility maintained. meets requirements industrial environment Class product) subject those conditions. board must installed computer system which provides screening suitable industrial environment. recommendations made computer system manufacturer/supplier must complied with regarding earthing installation boards. board must installed with backplate securely screwed chassis computer ensure good metal-to-metal (i.e. earth) contact. Most problems caused external cabling boards. important that external cabling board totally screened, that screen cable connects earth both ends cable. recommended that round screened cables with braided wire screen used preference those with foil screen drain wire. With terminal block connection card there space available earth point board mounting bracket. recommended that screen connected metal body hence earth) shortest possible "pigtail". Icon chassis these available adjacent expansion area. Unscreened cable will adequate unless contained wholly within cabinetry housing industrial carefully routed.
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Electromagnetic Compatibility
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ensure that board meets industrial radiated field immunity V/metre, cable should also fitted with ferrite clamp external cable close possible connector. preferred type Chomerics clip-on style, type H8FE-1004-AS. Ensure that screen external cable bonded good earth remote cable. Failure observe these recommendations invalidate compliance.
Warning This Class product. domestic environment this product cause radio interference which case user required take adequate measures.
Specification Blue Chip Technology Icon industrial fitted with this card meets following specification: Emissions 55022:1995 Radiated Conducted
Class Class
Immunity
50082-2:1991 incorporating: Electrostatic Discharge 801-2:1984 Performance Criteria Radio Frequency Susceptibility 801-3:1984 Performance Criteria Fast Burst Transients 801-4:1988 Performance Criteria
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Appendix
APPENDICES Appendix NUMBERING SYSTEMS Binary Hexadecimal Numbers
normal numbering system termed DECIMAL because there possible digits single column numbers. Decimal numbers also referred numbers having Base When counting, numbers increment units column from next increment resets units column carries over into next column. This indicates that there been full (the base number) counts units column. second column therefore termed "tens" column. more convenient when programming number system that provides clearer picture hardware operational register level. most common number systems used BINARY HEXADECIMAL. These systems provide alternative representation decimal numbers. binary number there only possible values result binary numbering often known Base When counting binary numbers, number increments units column from next increment units column reset carried over next column. This column indicates that full counts have occurred units column. second column termed "twos" column. Hexadecimal numbers have values followed letters also known system with Base With this counting system units increment from with decimal system, next count units column increments from then After units column resets next column increments from This indicates that sixteen counts have occurred units column. second column termed "sixteen's" column.
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Appendix
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following table shows three systems indicate successive numbers
Decimal Base Binary Base Hexadecimal Base
Notice next higher column does increment until lesser right overflowed. Binary representation ideally suited where visual representation computer register data needed. Each column termed (from Binary digIT). Only five Bits shown above table. With larger numbers, more Bits required. Normally Bits arranged groups eight termed BYTES. definition there BITS BYTE. Each column) value. binary table above rightmost least significant column each digit value Each digit next column value next then following diagram illustrates this.
DECIMAL VALUE
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Appendix
determine decimal value binary pattern, decimal number each column containing binary "1".
DECIMAL VALUE BINARY NUMBER
above example shows binary pattern that equivalent Decimal. binary string defining Byte unwieldy. make less error prone, bits forming byte divided into groups bits, known NIBBLES. With four bits there possible numeric combinations (including zero). convenient method representing each nibble hexadecimal base system. When converting binary hex, byte divided into nibbles each represented single digit. This technique applied selection base address circuit board. following diagram illustrates construction number.
NIBBLE VALUE BINARY NUMBER
HEXADECIMAL:
Hexadecimal upper nibble lower nibble resulting value Hex, since Decimal equals Hex.
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Appendix
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Base Address Selection
Each column physically represented board pair pins. practice, boards cover range addresses (usually Decimal). Therefore order four bits included, higher order bits added. This gives address range following diagram shows typical pins.
Here link fitted denote binary logic "0", left open indicate binary logic "1". example shows base address setting Hex.
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Appendix
APPENDIX MAPS PC/XT/AT Address
Address Allocated
000-01F 020-03F 040-05F 060-06F 070-07F 080-09F 0A0-0BF 0F8-0FF 1F0-1F8 200-207 278-27F 2F8-2FF 300-31F 360-36F 378-37F 380-38F 3A0-3AF 3B0-3BF 3C0-3CF 3D0-3DF 3F0-3F7 3F8-3FF
Controller (8237A-5) Interrupt Controller (8259A) Timer (8254) Keyboard Controller (8742) Control Port CMOS RAM, Mask (Write) Page Register (Memory Mapper) Interrupt Controller (8259) Clear (80287) Busy Reset (80287) Numeric Processor Extension (80287) Hard Disk Drive Controller Reserved Reserved Parallel Printer Port Reserved Serial Port Reserved Reserved Parallel Printer Port Reserved SDLC Communications, Bisync Reserved Bisync Reserved Reserved Display Controller Diskette Drive Controller Serial Port
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Appendix
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PC/XT Interrupt
Number Allocated Parity Timer Keyboard Reserved Asynchronous Communications (Secondary) SDLC Communications Asynchronous Communications (Primary) SDLC Communications Fixed Disk Diskette Parallel Printer
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Appendix
PC/AT Interrupt
Level CTLR CTLR Allocated Parity Channel Check (Interrupt Controllers) Timer Output Keyboard (Output Buffer Full) Interrupt from CTLR Real-time Clock Interrupt Redirected (IRQ Reserved Reserved Reserved Co-processor Fixed Disk Controller Reserved Serial Port Serial Port Parallel Port Diskette Controller Parallel Port
Channels
Memory Refresh Spare Floppy Disk Drive Spare
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