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IOS-440

32-Channel Isolated Digital Input Module with
Interrupts

USER’S MANUAL

ACROMAG INCORPORATED Tel: (248) 295-0310
30765 South Wixom Road Fax: (248) 624-9234
P.O. BOX 437
Wixom, MI 48393-7037 U.S.A.
[email protected]

Copyright 2009, Acromag, Inc., Printed in the USA.
Data and specifications are subject to change without notice.

8500-839-B11C007

retired

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Summary of Contents for IOS-440

Page 1: ...ANUAL ACROMAG INCORPORATED Tel 248 295 0310 30765 South Wixom Road Fax 248 624 9234 P O BOX 437 Wixom MI 48393 7037 U S A solutions acromag com Copyright 2009 Acromag Inc Printed in the USA Data and specifications are subject to change without notice 8500 839 B11C007 retired ...

Page 2: ...C The inputs normally function as independent input level detectors without interrupts However each input line includes built in event sense circuitry with programmable polarity debounce and interrupt support Inputs also include hysteresis for increased noise immunity The IOS 440 utilizes state of the art Surface Mounted Technology SMT to achieve its wide functionality and is an ideal choice for a...

Page 3: ...ed keep the carton and packing material for the agent s inspection For repairs to a product damaged in shipment refer to the Acromag Service Policy to obtain return instructions It is suggested that salvageable shipping cartons and packing material be saved for future use in the event the product must be shipped This board is physically protected with packing material and electrically protected wi...

Page 4: ...ual inputs also include selectable hardware debounce in Enhanced Mode For event sensing the Enhanced Mode allows a specific input level transition High to Low Low to High or Change of State to be detected and optionally generate an interrupt Memory is organized and addressed in separate banks of eight registers or ports eight ports to a bank The Standard Mode of operation addresses the first group...

Page 5: ... Register IN08 IN15 02 05 Not Driven1 READ4 Port 2 Register IN16 IN23 04 07 Not Driven1 READ4 Port 3 Register IN24 IN31 06 09 Not Driven1 READ2 Port 4 NOT USED 08 0B Not Driven1 READ2 Port 5 NOT USED 0A 0D Not Driven1 READ2 Port 6 NOT USED 0C 0F Not Driven1 READ Port 7 READ MASK REGISTER Also Current Bank Status 0E 0F Not Driven1 WRITE Port 7 WRITE MASK REGISTER Also Bank Select Register 0E Table ...

Page 6: ... return the status of the mask in bits 0 3 Standard Mode Write Mask Register Port 7 BIT WRITE TO REGISTER READ FROM REGISTER 0 Port 0 Write Mask Port 0 Write Mask 1 Port 1 Write Mask Port 1 Write Mask 2 Port 2 Write Mask Port 2 Write Mask 3 Port 3 Write Mask Port 3 Write Mask 4 7 NOT USED NOT USED Bits 4 7 of this register are not used On power up reset all bits are set to 0 To switch to Enhanced ...

Page 7: ... the carrier board see Interrupt Enable Register Event Interrupt Status Register for Ports 0 3 BIT READ EVENT STATUS REGISTER 0 Port 0 Interrupt Status IN00 IN07 1 Port 1 Interrupt Status IN08 IN15 2 Port 2 Interrupt Status IN16 IN23 3 Port 3 Interrupt Status IN24 IN31 4 6 NOT USED 7 Interrupt Status Flag Event Polarity Control Register For Ports 0 3 Enhanced Mode Bank 1 Port 6 Write Only A write ...

Page 8: ...OS clock for debounce The IOS 440 always uses the 8MHz clock for debounce and this register is only provided to facilitate backwards compatibility with the IOS 440 This register is cleared following a reset Bank Select Write Status Read Register 2 Enhanced Mode Bank 2 Port 7 Read and Write Bits 0 5 of this register are not used Bits 6 7 of this register are used to indicate read or select write th...

Page 9: ... input lines 0 31 Additionally ports are grouped eight to a bank There are four banks of ports used for controlling this module Standard Mode plus Enhanced Mode Banks 0 1 and 2 plus 2 additional registers for enabling the interrupt request line generating a software reset and storing the interrupt vector Each port input line is bipolar and accepts both positive and negative input voltages in two r...

Page 10: ... channel has been reset by writing a 1 to the corresponding event sense bit in the Event Sense Status Register after writing 0 to clear the event sense flip flop Interrupts may be reflected internally and reported by polling the module or optionally reported to the carrier by enabling control of the Interrupt Request line Intreq0 Control of this line is initiated via Bit 0 of the Interrupt Enable ...

Page 11: ...or while writing a 0 clears the event sensed without enabling further event sensing 9 Write 00H to the port 7 address to select register bank 0 where the port 0 input channels may be write masked Note that the port 7 address bank selection only operates from bits 6 7 of this register Likewise this register has a dual function depending on whether a read or write is executed As such the polarity se...

Page 12: ...en a board is first produced and when any repair is made it is tested placed in a burn in room at elevated temperature and retested before shipment Please refer to Acromag s Service Policy Bulletin or contact Acromag for complete details on how to obtain parts and repair PRELIMINARY SERVICE PROCEDURE Before beginning repair be sure that all of the procedures in Section 2 Preparation For Use have b...

Page 13: ...with no digital upsets Conducted RF Immunity CRFI Complies with EN61000 4 6 3V rms 150KHz to 80MHz and European Norm EN50082 1 with no digital upsets Electromagnetic Interference Immunity EMI No digital upset under the influence of EMI from switching solenoids commutator motors and drill motors Electrostatic Discharge Immunity ESD Complies with EN61000 4 2 Level 3 8KV enclosure port air discharge ...

Page 14: ...ebounce times are programmable and derived from the 8MHz system clock in combination with the debounce duration register value Debounce times are applied at the FPGA input and do not include opto coupler delay time Debounce values of 4us 64us 1ms and 8ms may be configured Each debounce time has an error of up to 375ns Interrupts Each channel has configurable interrupts They may be configured for h...

Page 15: ...LE 32 CHANNEL ISOLATED DIGITAL INPUT MODULE _________________________________________________________________________________________ 15 Acromag Inc Tel 248 295 0310 Fax 248 624 9234 Email solutions acromag com http www acromag com ...

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