Acromag PMC470 Series, User Manual

Page 1: ...nterrupts USER S MANUAL ACROMAG INCORPORATED 30765 South Wixom Road P O BOX 437 Wixom MI 48393 7037 U S A Tel 248 624 1541 Fax 248 624 9234 Copyright 2000 Acromag Inc Printed in the USA Data and specifications are subject to change without notice 8500 674 C05A002 retired ...

Page 2: ...fe is involved It is important that the user employ satisfactory overall system design It is agreed between the Buyer and Acromag that this is the Buyer s responsibility 1 0 GENERAL INFORMATION The PCI Mezzanine Card PMC Series PMC470 has 48 channels of general purpose digital inputs and outputs Inputs and outputs of this module are CMOS and TTL compatible Each of the I O lines can be used as eith...

Page 3: ...g controls for Windows 98 95 ME 2000 and Windows NT compatible application programs Model PMCSW ATX MSDOS format This software provides individual controls that allow Acromag PMC modules to be easily integrated into Windows application programs such as Visual C Visual Basic Microsoft Office 97 applications and others The ActiveX controls provide a high level interface to PMC modules eliminating th...

Page 4: ...models and are directly compatible with industry accepted I O panels termination panels and relay racks Consult the factory for information on compatible products I O Noise and Grounding Considerations The PMC470 is non isolated between the logic and field I O grounds since output common is electrically connected to the PMC module ground Consequently the field I O connections are not isolated from...

Page 5: ... PMC470 is a PCI Local Bus Specification version 2 2 compliant PCI bus target only PMC module The carrier CPU connects a PCI host bus to the PMC module The PCI bus is defined to address three distinct address spaces I O memory and configuration space The PMC module can be accessed via the PCI bus memory space and configuration spaces only The PCI card s configuration registers are initialized by s...

Page 6: ...o cover the additional functionality in this mode The first bank of the Enhanced Mode bank 0 is similar in operation to the Standard Mode The second bank bank 1 provides event sense and interrupt control The third bank is used to configure the debounce circuitry to be applied to input channels in the Enhanced Mode Two additional registers are provided to enable the interrupt request line generate ...

Page 7: ...t 0 Event Sense Clear Register Port 0 I O Points 0 7 200 205 Not Driven 1 READ Port 1 Event Sense Status Reg Port 1 I O Points 8 15 204 205 Not Driven 1 WRITE Port 1 Event Sense Clear Register Port 1 I O Points 8 15 204 209 Not Driven 1 READ Port 2 Event Sense Status Reg Port 2 I O Points 16 23 208 209 Not Driven 1 WRITE Port 2 Event Sense Clear Register Port 2 I O Points 16 23 208 20D Not Driven ...

Page 8: ... this register will return the status of the mask The Mask Register is used to disable writes to I O ports designated as input ports Thus when a port group of 8 I O lines is used for input writes to this port must be blocked masked to prevent contention between the output circuitry open drain and any external devices driving this port Standard Mode Write Mask Register Port 7 BIT WRITE TO REGISTER ...

Page 9: ...p Flop Re enable I O5 Event Sense 6 Port 0 I O6 Event Status Clear I O6 Event Sense Flip Flop Re enable I O6 Event Sense 7 Port 0 I O7 Event Status Clear I O7 Event Sense Flip Flop Re enable I O7 Event Sense Event Interrupt Status Register For Ports 0 5 Enhanced Mode Bank 1 Port 6 Read Only Reading this register will return the event interrupt status of I O ports 0 5 bits 0 5 and the interrupt sta...

Page 10: ...o be monitored and controlled Bank 2 registers control the debounce circuitry of the event inputs Bits 7 and 6 select the bank as follows Bank Selected Status Register Read Bit 7 Bit 6 BANK OF REGISTERS 00 Bank 0 Read Write I O 01 Bank 1 Event Status Clear 10 Bank 2 Event Debounce Control Clock and Duration 11 INVALID DO NOT WRITE BANK 2 REGISTERS Debounce Control Register Enhanced Mode Bank 2 Por...

Page 11: ...wer up or bus initiated software reset will set the outputs to the false high state and place the module in the Standard Operating Mode thus disabling debounce and event detection Pullups on the I O lines ensure a false high input signal for inputs left floating i e reads as 0 A reset will also clear the mask register and enable writes to the I O ports Further all I O event inputs are reset set to...

Page 12: ... negative transitions Since channel polarity is programmable on a nibble basis group of four the first nibble of a port could be configured for low to high transitions the second nibble for high to low transitions As such up to 24 change of state detectors may be configured Debounce Control Debounce control is built into the on board digital ASIC employed by the PMC470 and is enabled in the Enhanc...

Page 13: ...time before it will be recognized as a valid input transition Note that Debounce Duration Register 1 port address 2 would be used to configure debounce durations for I O points of ports 4 5 5 Enable the debounce circuitry for port 0 inputs by setting bit 0 of the Debounce Control Register Write 01H to the Port 0 Debounce Control Register at Base Address 200 of this bank If the module had been conf...

Page 14: ... the PMC module will initially terminate with a retry While the read data is moved to the read register typically 1000ns continued retries will result in retry terminations The retry termination allows the PCI bus to be free for other system operations while the data is moved to the read register A PCI bus write to the PMC module will result in 1 immmediately accepting the write data and normal cy...

Page 15: ...V direct contact discharge at input output terminals and European Standard EN50082 1 Electric Fast Transient Immunity EFT Complies with IEC1000 4 4 Level 2 0 5KV at field input and output terminals and European Norm EN50082 1 Radiated Emissions Meets or exceeds European Norm EN50081 1 for class A equipment Warning This is a class A product In a domestic environment this product may cause radio int...

Page 16: ... feet This shielded cable is recommended for all I O applications both digital I O and precision analog I O Application Used to connect Model 5025 552 termination panel to the PMC Module Length Standard lenght is 2 meters 6 56 feet Consult factory for other lenghts It is recommended that this length be kept to a minimum to reduce noise and power loss Cable 50 conductors 28 AWG on 0 050 inch center...

Page 17: ...SERIES PMC470 PCI MEZZANINE CARD 48 CHANNEL DIGITAL I O MODULE WITH INTERRUPTS ___________________________________________________________________________________________ 17 ...

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Page 21: ...SERIES PMC470 PCI MEZZANINE CARD 48 CHANNEL DIGITAL I O MODULE WITH INTERRUPTS ___________________________________________________________________________________________ 21 ...

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