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1. 3F0 3F7 Floppy disk controller 3F8 3FF Primary serial port COM1 APPENDIX PC 104 MECHANICAL SPECIFICATIONS PC 104 General Description While the PC and PC AT architectures have become extremely popular in both general purpose desktop and dedicated non desktop applications its use in embedded microcomputer applications has been limited due to the large size of standard PC and PC AT motherboards and expansion cards PC 104 module can be of two bus types 8 bit and 16 bit which correspond to the PC and PC AT buses respectively Besides bus option there are stackthrough and non stackthrough difference The stackthrough version provides a self stacking PC bus It can be placed any where in a multi module stack The non stackthrough version offers minimum thickness by omitting bus stackthrough pins It must be positioned at one end of a stack For ocnvenience the EX 9940 is equipped with stackthrough version only NOTE For safety you are suggested to cut bus stackthrough pins of the last module on condition that you are sure you won t add plug any module to the module stack in the future The following sections provide the mechanical and electrical specification for a compact version of the PC AT bus optimized for the unique requirements of embedded systems applications The specification is herein referred to as PC 104
2. example shows how to control the eight relays on module Assume the base address is 300Hex BASE amp H300 out BASE 0 out BASE 1 out BASE amp H80 out BASE amp H55 inp BASE relays are off Only relay 1 is actuated Only relay 8 is actuated Relay 1 3 5 7 are actuated Read back relay status 55 Hex FUNCTION DESCRIPTION Relay Output Each of the electromechanical relays has three contacts COM Common NO Normal Open and NC Normally Close When a 0 is written to the associated controlling bit the COM and NC posts make contact When a 1 is written to the controlling bit the COM and NO posts make contact Refer to REGISTER DESCRIPTION and PROGRAMMING sections about how to control the relays Logic 0 NC CO NO Each relay of the EX 9940 is equipped with on LED are labeled D1 through D8 for relay 1 through 0 The LED lights when relay BLOCK DIAGRAM WOODSU ON8U ONLY WOOTH ONTA NTA APPENDIX PC I O PORT MAPPING I O PORT ADDRESS RANGE FUNCTION 000 1FF PC reserved 200 20F Game controller Joystick 278 27F Second parallel printer port LPT2 2E1 GPIB controller 2F8 2FF Second serial port COM2 320 32F Fixed disk XT 378 37F Primary parallel printer port LPT1 380 38F SDLC communication port Monochrome adapter printer 3C0 3CF EGA reserved 3D0 3DF Color graphics adapter
3. EX 9940 8 Channel Relay Actuator PC 104 Module OPERATING GUIDE CHECK LIST Before getting started check if your EX 9940 EX 9940 16 8 Ch Relay Actuator PC 104 Module package includes the following items EX 9940 EX 9940 16 board Screw 3mm x 4 Bronze stick 6mm x 4 EX 9940 user s manual If anything missing please contact your dealer TABLE OF CONTENTS GENERALE EDSCRIPTION 1 Features soil iaia 1 Specifications css 2 MODULE CONFIGURATION AND INSTALLATION 4 Location DIAS AID ssi alari 4 DIP Switch aaa iaia 5 Connector Pin Assienments 7 MODULE INSTALLATION 9 REGISTER DESCRIPTION 10 PROGRANMLMING arcana FUNCTION DESCRIPTION 12 Relay sara 12 BLOCK DIAGRAM 13 APPENDIX A PCI PORT MAPPING 14 APPENDIX B PC 104 MECHANICAL SPECIFICATIONS 15 GENERAL DESCRIPTION The EX 9940 relay actuator PC 104 module is designed for control applications It contains 8 channels electromec
4. ION Location Diagram Refer to the following location diagram for help locating components needed during configuration and installation of the EX 9940 module RELAY REGIST ER BIT 8 RELAY REGIST ER BIT 4 RELAY REGIST ER BIT 7 RELAY REGIST ER BIT 3 RELAY REGIST ER BIT 6 RELAY REGIST ER BIT 2 RELAY REGIST ER BIT 5 RELAY REGIST ER 1 DIP Switch setting EX 9940 occupies four consecutive I O port spaces The first address or base address is set via a DIP switch labeled SW1 If more than one modules are to be installed to one PC each module must be given its own distinct base address No more than one module may use the same base address When you are selecting the base address it would be better if you check with APPENDIX A to avoid conflicting with other installed devices Valid addresses are from 200 Hex to 3F8 Hex Following figure is the default setting where the base address is set to 300 Hex BASE ADDRESS WSITCH SETTING IE Base Address 512 256 768 Decimal 300 Hexadecimal I O PORT RANGE DIP SWITCH POSITION HEXADECIMAL 1 2 3 4 5 6 7 8 A9 8 7 AS 4 AB 2 1 0 0 0 0 0 0 200 203 204 207 208 20 20C 20F 220 223 300 303 3F8 3FB 3FC 3FF 0 ON 1 OFF Factory default setting Connector Pin Assignments All outputs of EX 9940 are brought out through an 50 pin connectors labeled JP1 The fol
5. four spacers if necessary 7 cable if necessary 8 Crush between the module until inside distance is SPACER s height 0 6 Restore all the screws 9 Repeat step 6 until all module are set into position 10 Connect cable to EX 9940 if necessary 11 Replace the case cover and connect all the necessary cables 12 Turn on the system power REGISTER DESCRIPTION The EX 9940 occupies 4 consecutive addresses in I O address space but only one address is used During installation properly set Sw1 switch to select the correct base address The following table shows the register configuration Base Address 0 7 6 5 413 2 1 _Bit Name R8 R7 R6 R5 R4 R3 R2 Only base address 0 is used for 8 bit wide relay output register This register is read write register for controlling relays The controlling bit R1 through R8 is corresponding to the onboard relay 1 through relay 8 To activate a relay set the corresponding controlling bit to 1 To turn off a relay set the corresponding controlling bit to 0 The data written to the register can be read back as a data for comparison and confirmation purpose Base address 1 2 3 are all reserved PROGRAMMING Programming the EX 9940 is very simple It can be easily accomplished using direct instructions of whatever application language In this section an example BASIC is given Example This
6. hanical single pole double throw relays which can be set or reset directly by I O write instructions Each relay is rate at 1 5A at 125VAC The normal open normal close and common contacts of each relay are brought out through a 50 pin mating connectors A LED adjacent to each relay lights up when the relay is activated The relay is activated when a logic high is written to the controlling bit Features 8 single pole double throw relays 125VAC 1 5A maximum contact rating Isolation upto 1000 Vrms NC NO COM contacts output e LED indicators to show activated relays Specifications Relay Output Number of Channels Type Form Contact Rating Maximum Switching Power Maximum Switching Voltage Maximum Switching Current Contact Resistance Indication Mode Life Expectancy Operate Release Break down Voltage Coil to contact Across contact Power Requirements 5VDC 12VDC 8 Electromechanical DIP Relay Normal Open DPDT wired as SPDT 30W 60VA 125VDC 125VAC 1 5ADC 1 5AAC 100m maximum Logic 1 LED Light on and relay set Logic 0 LED Light off and relay reset 10x10 operations rated 8 8ms 1500 Vrms 1000Vrms 200mA typ 100mA typ Physical Environmental Dimension Weight Operating Temperature Range Storage Temperature Range Relative Humidity 95mm x 90mm 2305 0 to 50 C 20 to 70 C 0 to 90 non condensing MODULE CONFIGURATION AND INSTALLAT
7. lowing figure and descriptions give the necessary data for wiring NAME PIN PIN NAME RINC RINO RINO R2COM R2COM R2NC R2NC R2NO R2NO R3COM R3COM R3NC R3NC R3NO R3NO R4COM R4COM R4NC R4NC R4NO R4NO RSCOM RSCOM RSNC RSNC RSNO RSNO R6COM R6COM R6NC R6NC R6NO R6NO R7COM R7COM R7NC R7NC R7NO R7NO R8COM R8COM R8NC R8NC R8NO R8NO N C N C connector pin description SIGNAL NAME DESCRIPTION R1COM R8COM The common contact pins of relays 1 through 8 RINC R8NC The normally close contacts of relays 1 through 8 RINO R8NO The normally open contacts of relays 1 through 8 N C No connect MODULE INSTALLATION The EX 9940 PC 104 module is shipped with protective electrostatic cover When unpacking touching the module electrostatically shielded packaging with the metal frame of your computer to discharge the accumulated static electricity prior to touching the module Following description summarizes the procedures for installing the EX 9940 WARNING TURN OFF the PC and all accessories connected to the PC whenever installing or removing any peripheral board including the EX 9940 module Installation procedures 1 Turn off the system power 2 Unplug all power cords 3 Remove the case cover if necessary 4 Remove the top module if it is a non stackthrough module 5 Put the EX 9940 module in line with the top present module as described in APPENDIX B 6 Install

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