PCM-3753I User Manual
Contents
1. PCM 37531 96 channel Digital I O PCI 104 Module User Manual Copyright This documentation and the software included with this product are copyrighted 2008 by Advantech Co Ltd All rights are reserved Advantech Co Ltd reserves the right to make improvements in the prod ucts described in this manual at any time without notice No part of this manual may be reproduced copied translated or transmit ted in any form or by any means without the prior written permission of Advantech Co Ltd Information provided in this manual is intended to be accurate and reliable However Advantech Co Ltd assumes no responsibility for its use nor for any infringements of the rights of third parties which may result from its use Acknowledgments PC LabCard is a trademark of Advantech Co Ltd IBM and PC are trademarks of International Business Machines Corporation MS DOS and Windows are trademarks of Microsoft Corporation Intel and Pen tium are trademarks of Intel Corporation CE Notification PCM 37531 developed by ADVANTECH CO LTD has passed the CE test for environmental specifications when shielded cables are used for external wiring We recommend the use of shielded cables This kind of cable is available from Advantech Please contact your local supplier for ordering information Printed in Taiwan February 2008 PCM 3753I User Manual Product Warranty 2 years Advantech warrants to you the original purch2. b Then enable the change of state interrupt function for port BO of the PCM 3753 JE by writing a 1 in bit 2 of Base 48 M2 Description 1 Enable the change of state interrupt function for port AO 0 Disable the change of state interrupt function for port AO c When a change of state occurs in PBO1 or PB02 or PB06 or PBO7 on the PCM 3753 IE an interrupt signal is generated 23 Chapter 3 PCM 3753I User Manual 24
3. port AO of the PCM 37531 by writing a 1 in bit 0 of Base 16 M2 Description 1 Enable the change of state interrupt function for port AO 0 Disable the change of state interrupt function for port AO PCM 3753I User Manual 22 d When the input signals at channels PAO1 PAO2 and PAO7 are high and PA06 is low an interrupt signal will be generated This result is not affected by the states of channels PA00 PA03 PAO4 and PAOS 3 3 8 Change of State Interrupt Function The PCM 37531 also provides the change of state interrupt function for port BO It monitors the status of the enabled channels of port BO which are chosen in Base 28 or Base 60 for the PCM 3753IE When one of the enabled channels changes its state the PCM 37531 delivers an inter rupt signal to the system to handle this event The following is an exam ple Example 3 2 Assume that the change of state interrupt function for the T O channels PBO1 PB02 PB06 and PBO7 on the PCM 3753IE are enabled i e the signals in PB00 PB03 PB04 and PBOS on the PCM 3753IE and port BO of the PCM 37531 are ignored during the change of state process When a change of state occurs in either PBO1 or PBO2 or PB06 or PBO7 an interrupt signal will be delivered to the system a First enable the change of state interrupt function for PB01 PBO2 PB06 and PB07 of the PCM 3753 IE Bit 7 6 5 4 3 2 1 0 Base 60 1 1 0 0 0 1 1 0
4. quickly 4 Carefully pack the defective product a fully completed Repair and Replacement Order Card and a photocopy proof of purchase date such as your sales receipt in a shippable container A product returned without proof of the purchase date is not eligible for war ranty service 5 Write the RMA number visibly on the outside of the package and ship it prepaid to your dealer iii Technical Support and Assistance Step 1 Visit the Advantech web site at www advantech com support where you can find the latest information about the product Step 2 Contact your distributor sales representative or Advantech s cus tomer service center for technical support if you need additional assistance Please have the following information ready before you call Product name and serial number Description of your peripheral attachments Description of your software operating system version appli cation software etc A complete description of the problem The exact wording of any error messages Packing List Before setting up the system check that the items listed below are included and in good condition If any item does not accord with the table please contact your dealer immediately e 1x PCM 37531 e 1x CD ROM e 1x Startup Manual Safety Precaution Static Electricity Follow these simple precautions to protect yourself from harm and the products from damage 1 To avoid electrical shock always disconnect
5. the power from your PC chassis before you work on it Don t touch any components on the CPU card or other cards while the PC is on 2 Disconnect power before making any configuration changes The sudden rush of power as you connect a jumper or install a card may damage sensitive electronic components PCM 3753I User Manual iv Chapter Chapter Chapter eres NN Do au 3 3 Contents General Information ses 2 Introduction Features i srities Applications neee Specifications Pin Assignments CNO CN3 6 Installation inner S Initial Inspection 8 Unpacking eein ioe e ner 8 Jumper Settings occ ccccceeecseceeeeeceeceeeceeeeeeeeeeeeeneeenees 9 Figure 2 1 Location of Connectors and Jumpers 9 Table 2 1 Summary of Jumper Settings 10 Setting the BoardID Switch SW2 Table 2 2 BoardID Setting SW2 2 4 1 BoardID Register nneeneneeene 5 Table 2 3 BoardID register of PCM 37531 11 SW3 amp SW4 Settings 12 Hardware Installation 12 Operation sise OVEIVIEW ne eines Digital VO Ports 22 0 essen 3 2 1 Introduction 3 2 2 8255 Mode 0 3 2 3 Input Output Control ueesensesnsensenennenenennenene nenne 15 Table 3 1 Bit map of port configuration register 15 3 2 4 Initial Configuration sssssssesssessssesssesseserse
6. 702 D Q me I PCA M31 M30 lt INT A 0 0 Pattern Match PAO cal 1 cm 0 Change of State PBO I 1 Figure 3 2 Interrupt sources 19 Chapter 3 3 3 4 Interrupt Source Control The mode bits in the interrupt control registers determine the allowable sources of signals generating an interrupt For the PCM 3753 bit 4 and bit 5 of Base 16 determines the interrupt source of port CO bit 4 and bit 5 of Base 17 determines the interrupt source for port C1 and so forth Because of sharing the same PCI controller with the PCM 37531 the PCM 3753IE s interrupt sources are also controlled by the PCM 3753I s interrupt control register Bit 4 and bit 5 of Base 48 determines the interrupt source of port CO on the PCM 3753 IE bit 4 and bit 5 of Base 49 determines the interrupt source of port C1 and so forth Please refer the table in Appendix A to find the corresponding address for the interrupt source control of each port C The following table shows the relationship between an interrupt source and the values in the mode bits Table 3 3 Interrupt mode bit values Base 16 48 Port 0 Base 17 49 Port 1 MO1 MOO Description M11 M10 Description 0 Disable interrupt 0 0 Disable interrupt Source PCOO 0 1 Source PC10 1 0 Source PCOO 1 0 Source PC10 and PC04
7. FF ON ON ON 9 OFF ON ON OFF 10 OFF ON OFF ON 11 OFF ON OFF OFF 12 OFF OFF ON ON 13 OFF OFF ON OFF 14 OFF OFF OFF ON 15 OFF OFF OFF OFF Default 2 4 1 BoardID Register You can determine the BoardID setting in the register as shown below Table 2 3 BoardID register of PCM 3753I Base 20 3 2 1 0 Abbreviation ID3 ID2 ID1 IDO Note IDO The least significant bit LSB of BoardID ID3 The most significant bit MSB of BoardID 11 Chapter 2 2 5 SW3 amp SW4 Settings Ab When set to Off 1 the Digital Port will be set by software Default 2 6 Hardware Installation Turn the PC s power off Turn off the power of any peripheral devices such as printers and monitors Disconnect the power cord and any other cables from the back of the computer Remove the system unit cover see the user s guide for your chassis if necessary Remove the CPU card from the chassis if necessary to gain access to the card s PCI 104 connector Connect connector J1 of the PCM 37531 card to the PCI 104 con nector Carefully align the pins with the PC 104 connector Slide the module into the connector The module pins may not slide all the way into the connector do not force the pins into place or the module may be damaged Fasten the module to the CPU card by using the included brass screw Screw the brass spacer into the threaded hole on the CPU card Do not tighten too much
8. Ports as Output Ports By shorting the two pins of the jumpers JPAO JPBO JPCOL JPCOH JPA1 JPB1 JPCIL JPC1H JPA2 JPB2 JPC2L JPC2H JPA3 JPB3 JPC3L or JPC3H a user sets the corresponding ports to be output ports JPAO means jumper for port AO JPBO means jumper for port BO etc Shorting the two pins of a port s jumper disables the port from being soft ware configurable as an input port The initial state of each of these ports after system power on or reset will be logic 0 voltage low unless jumper JP1 determines otherwise See JP1 below Jumper JP1 Restores Ports to Their Condition Prior to Reset Jumper JP1 gives the PCM 3753I a new and valuable capability With JP1 enabled i e by shorting the lower two pins of JP1 the PCM 37531 memorizes all port I O settings and output values and in the event of a hot reset the settings and output values present at the port just prior to reset are restored to each port following reset This feature applies to both ports set by software and to ports configured as output ports via jumper Depending on the application this capability may allow a card to be reset without requiring a complete shutdown of processes controlled by the card since port values are left unchanged and are inter rupted only momentarily Complete loss of power to the chip clears chip memory Thus even if JP1 is enabled if the power to the card is disconnected the card s initial power on state will be
9. and PC14 1 1 Disable interrupt 1 1 Disable interrupt Base 18 50 Port 2 Base 19 51 Port 3 M21 M20 Description M31 M30 Description 0 Disable interrupt 0 0 Disable interrupt Source PC20 Source PC30 0 Source PC20 1 0 Source PC30 and PC24 and PC34 1 1 Disable interrupt 1 1 Disable interrupt PCM 3753I User Manual 20 3 3 5 Interrupt Triggering Edge Control The interrupt can be triggered by a rising edge or a falling edge of the interrupt signal selectable by the value written in the triggering edge control bit in the interrupt control register as shown in following table Table 3 4 Triggering edge control bit values En n 0 3 Triggering edge of interrupt signal 1 Rising edge trigger 0 Falling edge trigger 3 3 6 Interrupt Flag Bit The interrupt flag bit is a flag indicating the status of an interrupt It is a readable and writable bit Read the bit s value to find the status of the interrupt write 1 to this bit to clear the interrupt This bit must be cleared in the ISR to service the next incoming interrupt Table 3 5 Interrupt flag bit values F01 F02 and Fn n 0 3 Interrupt Status Read 1 Interrupt exists 0 No interrupt Write 1 Clear interrupt 0 Don t care F01 pattern patch interrupt flag bit of port AO F02 change of state interrupt flag bit of port BO Fn interrupt flag bit of port Cn n 0 3 21 Chapter 3 3 3 7 Patter
10. aser that each of its prod ucts will be free from defects in materials and workmanship for two years from the date of purchase This warranty does not apply to any products which have been repaired or altered by persons other than repair personnel authorized by Advantech or which have been subject to misuse abuse accident or improper instal lation Advantech assumes no liability under the terms of this warranty as a consequence of such events Because of Advantech s high quality control standards and rigorous test ing most of our customers never need to use our repair service If an Advantech product is defective it will be repaired or replaced at no charge during the warranty period For out of warranty repairs you will be billed according to the cost of replacement materials service time and freight Please consult your dealer for more details If you think you have a defective product follow these steps 1 Collect all the information about the problem encountered For example CPU speed Advantech products used other hardware and software used etc Note anything abnormal and list any onscreen messages you get when the problem occurs 2 Call your dealer and describe the problem Please have your man ual product and any helpful information readily available 3 If your product is diagnosed as defective obtain an RMA return merchandize authorization number from your dealer This allows us to process your return more
11. ear at the pins immediately following the control word taking effect If no output value was specified the value will be indeterminate either 0 or 1 which may cause a dangerous condition 3 2 4 Initial Configuration The initial configuration of each port depends on the input output jumper setting of each port on the setting of the jumper JP1 and on whether the power was actually disconnected or whether the system was hot reset If jumper JP1 is not enabled all ports configured by software are automatically set as input ports during system start up or reset with a default signal level of logic 1 high All ports set via jumpers as output ports are set as output ports during system start up or reset signal level logic 0 0 V 15 Chapter 3 If the jumper JP1 is enabled and the initial configuration is caused by a reset all ports will return to the states they had just prior to the reset The reset must be a hot reset power not disconnected for enabled JP1 to return ports to their prior values Otherwise the card behaves as though JP1 were not enabled Please refer to Jumper settings in Chapter 2 for more information 3 2 5 Dry Contact Support for Digital Input Each digital input channel accepts either dry contact or 0 5 VDC wet contact inputs Dry contact capability allows the channel to respond to changes in external circuitry e g the closing of a switch in the external circuitry when no voltage is present in the exte
12. g refer to IEC 68 2 3 Connector Four 50 pin box header Dimensions 96 x 90 mm 3 8 x 3 5 5 Chapter 1 1 5 Pin Assignments CNO CN3 PCM 37531 User Manual 6 Chapter 2 Installation 2 1 Initial Inspection Before starting to install the PCM 37531 make sure there is no visible damage on the card We carefully inspected the card both mechanically and electrically before shipment It should be free of marks and in perfect order on receipt As you unpack the PCM 37531 check it for signs of shipping damage damaged box scratches dents etc If it is damaged or fails to meet its specifications notify our service department or your local sales representative immediately Also call the carrier immediately and retain the shipping carton and packing materials for inspection by the carrier We will then make arrangements to repair or replace the unit 2 2 Unpacking The PCM 37531 contains components that are sensitive and vulnerable to static electricity Discharge any static electricity on your body to ground by touching the back of the system unit grounded metal before you touch the board Remove the PCM 37531 card from its protective packaging by grasping the card s rear panel Handle the card only by its edges to avoid static dis charge which could damage its integrated circuits Keep the antistatic package Whenever you remove the card from the PC please store the card in this package fo
13. he system to handle this event These interrupt functions release the CPU from the burden of pulling all T O points enabling a PC to handle more I O points with higher performance 3 Chapter 1 1 2 Features 96 TTL digital I O lines Emulates mode 0 of 8255 PPI Buffered circuits for higher driving capacity than 8255 Multiple source interrupt handling Output status read back Pattern match and Change of state interrupt functions for critical T O monitoring Keeps I O setting and digital output values when hot system reset Supports dry contact and wet contact 50 pin pin header BoardID switch 1 3 Applications Industrial AC DC I O devices monitoring and controlling Relay and switch monitoring and controlling Parallel data transfer TTL DTL and CMOS logic signal sensing Indicator LED driving PCM 3753I User Manual 4 1 4 Specifications 1 0 Channels 96 digital I O lines Programming Mode 8255 PPI mode 0 Input Signal Logic level 0 0 8 V max Logic level 1 2 0 V min Output Signal Logic level 0 0 44 V max 24 mA sink Logic level 1 3 76 V min 24 mA source Transfer Rate 1 6 Mbytes sec tested under DOS K6 300MHz CPU Power Consumption 5 V 105 mA typical 5 V 210 mA max Operating Temperature 0 60 C 32 140 F refer to IEC 68 2 1 2 Storage Temperature 20 70 C 4 158 F Operating Humidity 5 95 RH non condensin
14. n Match Interrupt Function The PCM 37531 provides the pattern match interrupt function for port AO It monitors the status of the enabled input channels which are cho sen in Base 24 or Base 56 for the PCM 3753IE and compares the received state values with the pre set state values written in Base 20 Base 52 for the PCM 3753IE When the actual state values match the pre set state values the PCM 3753 1 will deliver an interrupt signal to the system This function releases the CPU from the burden of polling all of the I O points enabling a PC to handle more I O points with higher performance The following is an example Example 3 1 Assume that the pattern match function for the I O channels PAO1 PAO2 PA06 and PAO7 of the PCM 37531 is enabled i e PA00 PA03 PA04 and PAOS on the PCM 37531 and port AO on the PCM 3753IE are ignored during the pattern match monitoring process The user can set the pattern match values for the enabled input channels and these will be compared to the actual channel states of the enabled channels The following is an example a First enable the pattern match interrupt function for channels PAO1 PA02 PA06 and PA07 Bit 7 6 5 4 3 2 1 0 Base 24 1 1 0 0 0 1 1 0 b Write the pre set pattern match state of the enabled channels Bit 7 6 5 4 3 2 1 0 Base 20 1 0 x x x 1 1 x c Finally enable the pattern match function for
15. nated PB00 PB01 PB07 etc These port names are used both in this manual and in the software library Please refer to Section 1 5 Pin Assignments 3 2 2 8255 Mode 0 The basic 8255 mode 0 features included on the PCM 3753 cards are e 8 bit I O ports port A PA and port B PB e Port C is divided into two nibble wide 4 bit I O ports PC upper and PC lower Any port can be used for either input or output e Output status can be read back PCM 3753I User Manual 14 3 2 3 Input Output Control A control word can be written to a port s configuration register Base 3 7 11 and 15 respectively for ports 0 1 2 and 3 on the PCM 37531 and Base 35 39 43 and 47 respectively for ports 0 1 2 and 3 on the PCM 3753IE to set the port as an input or an output port unless the ports are set as output ports via jumpers refer to Section 2 3 Jumper Settings Table 3 1 shows the format of a control word Table 3 1 Bit map of port configuration register D7 D6 D5 D4 D3 D2 D1 DO Not Not Not PortA Port C Not PortB Port C read read read 0 output higher read 0 output lower bits 1 input bits 1 input 0 output 0 output 1 input 1 input Note A control word has no effect if the corresponding port is set as an output port by a jumper Warning Before setting any port as an output port via software make sure that a safe output value has also been set An output voltage will app
16. nnel to respond to changes in external circuitry e g the closing of a switch in the external circuitry when no voltage is present in the external circuit Reset Protection Fulfills the True Requirement of Industrial Applications When the system is hot reset the power is not turned off the PCM 37531 can either retain the last I O port settings and outputs value or return to its default configuration depending on the jumper setting This function protects the system from wrong operations during unexpected system resets PCM 3753I User Manual 2 Interrupt Functions Ensure Faster System Response Two lines of each port C i e ports C0 C1 C2 and C3 are connected to an interrupt circuit The Interrupt Control Register of the PCM 37531 controls how these signals generate an interrupt More than one interrupt request signals can be generated at the same time and then the software can process these request signals by ISR The multiple interrupt sources provide the card with more capability and flexibility The PCM 37531 also provides Pattern Match interrupt function for port AO The card monitors the states of port AO and compares them with a pre set pattern When the received state matches the pre set pattern the PCM 3753I generates an interrupt signal to the system Change of State interrupt function is provided at port BO When any signal line of port BO changes its state the card generates an interrupt to t
17. or the threads may be damaged Attach any accessories to the PCM 3753 using 50 pin flat cables Reinstall the CPU card and replace the system unit cover Recon nect the cables you removed in step 2 Plug in and turn on the power This completes the hardware installation Install the soft ware driver as described in the following section PCM 3753I User Manual 12 Chapter 3 Operation 3 1 Overview This chapter describes the operating characteristics of the PCM 37531 The driver software bundled with this card allows a user to access all of the card s functions without register level programming Please see the User s Manual included on the driver CD ROM for more information For users who prefer to implement their own bit level programming to drive the card s functions information useful for making such a program is included in this chapter 3 2 Digital I O Ports 3 2 1 Introduction The PCM 3753 each emulate four 8255 programmable peripheral interface PPI chips in mode 0 but with higher driving capability than a standard 8255 chip Each of these 8255 chip emulators has 24 programmable I O pins that are divided into three 8 bit ports The total 96 digital I O pins on the PCM 37531 is divided into 12 ports desig nated PAO PBO PCO PAI PB1 PCI PA2 PB2 PC2 PA3 PB3 and PC3 Each port can be programmed as an input or an output port The I O pins in port AO are designated PA00 PAO1 PA07 the pins in port BO are desig
18. r its protection You should also avoid contact with materials that hold static electricity such as plastic vinyl and styrofoam PCM 3753I User Manual 8 2 3 Jumper Settings We designed the PCM 3753I with ease of use in mind It is a plug and play card i e the system BIOS assigns the system resources such as base address and interrupt automatically The following section describes how to configure the card You may want to refer to the figure below for help in identifying card components 00000000000000000000000 00000000000000000000000H 000000000000000000000000 000000000000000000000001 000000000000000000000000 D BCTIe s CTI A i 9 Figure 2 1 Location of Connectors and Jumpers Jumper Settings to Set Ports as Input or Output by Software When the two pins of jumpers JPAO JPBO JPCOL JPCOH JPA 1 JPB1 JPCIL JPC1H JPA2 JPB2 JPC2L JPC2H JPA3 JPB3 JPC3L or JPC3H are not shorted i e by setting a jumper the corresponding ports are set to be configurable as input or output ports by software JPAO means jumper for port AO JPBO means jumper for port BO etc See Table 2 1 If jumper JP1 is not enabled i e by shorting the upper two pins of JP1 all ports configured by software are automatially set as input ports during system startup a reset with a default signal level of logic 1 high But see Jumper JP1 discussion below 9 Chapter 2 Using Jumpers to Set
19. rnal circuit Figure 3 1 shows external circuitry with both wet and dry contact components connected as an input source to one of the card s digital input channels External Internal PC 5V o 15KQ Buffer 7 0 5W i Dry Contact Open gt High u Close Low Dry Resistor Wet Ext GND Wet Contact 2 0 5 25 V pg gt High Contact bel Contact 0 0 8 Voo Low Figure 3 1 Wet and dry contact inputs Note For wet contact configurations a malfunction may occur if the internal resistance of the voltage source is significant gt 1 5 kW Itis advisable to connect a 1 5 kW resistor in parallel with such a voltage source to avoid a voltage rise inside the voltage source PCM 3753I User Manual 16 3 3 Interrupt Functions 3 3 1 Introduction Two lines of each I O port C plus ports AO and BO are connected to the interrupt circuitry The Interrupt Control Register of the PCM 37531 controls how the combination of these signals generates an interrupt Six interrupt request signals can be generated at the same time and then the software can service these six request signals by IRQ The multiple interrupt sources provide the card with more capability and flexibility 3 3 2 IRQ Level The IRQ level is set automatically by the PCI plug and play BIOS and is saved in the PCI controller There is no need for users to set the IRQ level Only one IRQ level is used by this card although it ha
20. s six interrupt sources 3 3 3 Interrupt Control Registers The Interrupt Control Registers Base 16 17 18 and 19 for the PCM 37531 and Base 48 49 50 and 51 for the PCM 3753IE control the interrupt signal sources edges and flags The following table shows the bit map of each interrupt control register These registers are read able writable When writing to one of them it is used as a control regis ter and when reading from it it is used as a status register 17 Chapter 3 Table 3 2 Interrupt control register bit map Base 16 48 Port 0 Bit D7 D6 D5 D4 D3 D2 D1 DO Abbreviation FO EO MO1 MOO F02 M2 F01 M1 Base 17 49 Port 1 Bit D7 D6 D5 D4 D3 D2 D1 DO Abbreviation F1 E1 M11 M10 Base 18 50 Port 2 Bit D7 D6 D5 D4 D3 D2 D1 DO Abbreviation F2 E2 M21 M20 Base 19 51 Port 3 Bit D7 D6 D5 D4 D3 D2 D1 DO Abbreviation F3 E3 M31 M30 Mn0 and Mnl mode bits of port Cn n 0 3 MI pattern match port enable control bit of port AO M2 change of state port enable control bit of port BO En triggering edge control bit n 0 3 Fn interrupt flag bit of port Cn n 0 3 F01 pattern patch interrupt flag bit of port AO F02 change of state interrupt flag bit of port BO PCM 3753I User Manual 18 M01 M00 Lt M11 M10 TT M21 M20 6
21. sesessesesseeesese 15 3 2 5 Dry Contact Support for Digital Input 16 Figure 3 1 Wet and dry contact inputs eee 16 Interrupt FUNCTIONS 0 0 eee eeeeceecneeeeseeseceeeeceeeeeeneeeeeees 17 3 3 1 Introduction 3 3 2 ARO Level 2 2 ee ea 3 3 3 Interrupt Control Registers 0 ceeeeseseeeeeeeeeeees Table 3 2 Interrupt control register bit map Be Figure 3 2 Interrupt sources ucnnnnenseneenennenensennen onen 3 3 4 Interrupt Source Control uneeseesesnenseneenenesnenennnenene Table 3 3 Interrupt mode bit values 3 3 5 Interrupt Triggering Edge Control Table 3 4 Triggering edge control bit values 3 3 6 Interrupt Flag Bit ay Table 3 5 Interrupt flag bit values 3 3 7 Pattern Match Interrupt Function 3 3 8 Change of State Interrupt Function v Table of Contents PCM 3753I User Manual vi Chapter 1 General Information 1 1 Introduction The PCM 37531 is a 96 ch digital I O PCI 104 module The card emu lates mode 0 of the 8255 PPI chip but the buffered circuits offer a higher driving capability than the 8255 The 96 I O lines are divided into twelve 8 bit I O ports A0 BO CO Al B1 C1 A2 B2 C2 A3 B3 and C3 Users can configure each port as input or output via software Dry Contact Support for Digital Input Each digital input channel at the PCM 3753 accepts either 0 5 VDC wet contact or dry contact inputs This dry contact capability allows the cha
22. the state of an input port with voltage high input for software set ports or the state of an output port with voltage low out put for jumper set ports When jumper JP1 is not enabled both power off and reset results in ports returning to the state of an input port with voltage high input or returning to the state of output port with voltage low output for jumper set ports Table 2 1 Summary of Jumper Settings Jumpers Function Description JP1 Keep the last digital output gt lo F5 status after hot reset JP1 Load default configuration while gt GS gt hot reset Default PCM 3753I User Manual 10 2 4 Setting the BoardiD Switch SW2 You can use the BoardID command 0x20 to get the board s unique iden tifier PCM 3753 has a built in BoardID SMD switch SW2 which is used to define each card s unique identifier You can determine the identi fier in the register as shown in Table 2 2 When there are multiple cards on the same chassis this BoardID setting is useful for identifying each card s device number We set the PCM 37531 s BoardID switch to 0 at the factory If you need to adjust this setting please see below Table 2 2 BoardID Setting SW2 BoardiD DEC Switch Position ID3 ID2 ID1 IDO 0 ON ON ON ON 1 ON ON ON OFF 2 ON ON OFF ON 3 ON ON OFF OFF 4 ON OFF ON ON 5 ON OFF ON OFF 6 ON OFF OFF ON 7 ON OFF OFF OFF 8 O
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