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Summary of Contents for SeaLevel PIO-48.PC104
- Page 1 PIO-48.PC104 User Manual | 3701 © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021...
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Page 2: Table Of Contents
BEFORE YOU GET STARTED ..........................4 CARD SETUP ................................ 7 SOFTWARE INSTALLATION ..........................9 PHYSICAL INSTALLATION ..........................11 DIGITAL I/O INTERFACE ............................ 12 PROGRAMMING THE PIO-48.PC104 ........................ 15 ELECTRICAL CHARACTERISTICS ........................19 SPECIFICATIONS ............................... 20 EXAMPLE CIRCUITS ............................21 APPENDIX A – TROUBLESHOOTING........................ 22 APPENDIX B –... -
Page 3: Introduction
Introduction The PIO-48.PC104 part number 3701 digital I/O interface provides 48 channels of buffered drive digital I/O emulating 8255 mode zero. The PIO-48.PC104 can be utilized for a variety of control and automation applications including control and monitoring of TTL devices (e.g., LEDs, small solenoids, small relays) and interfacing to solid-state relay racks (SSRs) for high-power AC or DC loads. -
Page 4: Before You Get Started
Before You Get Started What’s Included The PIO-48.PC104 is shipped with the following items. If any of these items are missing or damaged, please contact Sealevel for replacement. Item# 3701 – • PIO-48.PC104 Adapter Advisory Conventions Warning The highest level of importance used to stress a condition where damage could result to the product, or the user could suffer serious injury. - Page 5 Optional Items Depending upon your application, you are likely to find one or more of the following items useful for interfacing the PIO-48.PC104 to real-world signals. All items can be purchased from our website (www.sealevel.com) or by calling 864-843-4343. For TTL applications: •...
- Page 6 Module simulates the operation and load characteristics of a standard 24-channel relay rack. An LED corresponding to each port bit illuminates to indicate state. Eight position DIP-switches are used to generate input status changes. © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021...
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Page 7: Card Setup
Card Setup Address Selection The PIO-48.PC104 occupies 8 consecutive I/O locations. The DIP-switch (S1) is used to set the base address for these locations and the IRQ mode options. Be careful when selecting the base address as some selections conflict with existing PC ports. The following table shows several examples that usually do not cause a conflict. - Page 8 IRQ Selection The PIO-48.PC104 has an interrupt selection jumper, which should be set prior to use, if an interrupt is required by your application software. Consult the user manual for the application software being used to determine the proper setting.
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Page 9: Software Installation
9. Scroll through the list of categorized hardware and select ‘SeaIO Devices’. If this is the first SeaIO device you may need to select ‘Other Devices’ and ‘Sealevel Systems, Inc.’ instead of ‘SeaIO Devices’. - Page 10 15. Windows NT Card Installation: After accomplishing steps 1 – 3, bring up the Control Panel and double-click on the SeaIO Devices icon. To install a new card, click “Add Port”. Repeat this procedure for as many SeaIO cards as you wish to install. © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021...
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Page 11: Physical Installation
Physical Installation Extreme care should be taken when installing the PIO-48.PC104 to avoid causing damage to the connectors. After the adapter is installed, connect your I/O cables to P2 and P5. Please note these headers are keyed so that pin 1 of the cable matches pin 1 of the connector. Refer to... -
Page 12: Digital I/O Interface
Digital I/O Interface The PIO-48.PC104’s 48 digital I/O channels are accessed via two industry-standard 50-pin header connectors. Each header provides 24 bits of digital I/O divided into two eight-bit ports and two four bit ports for upper and lower nibble. Each port may be individually configured via software command as input or output. - Page 13 This provides consistent biasing on all un- terminated lines. Resistor Corresponding Port R34-R41 Port A1 R42-R49 Port B1 R50-R53 Port C1L R54-R57 Port C1U R1-R8 Port A2 R9-R16 Port B2 R17-R20 Port C2L R21-R24 Port C2U © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021...
- Page 14 Physical Connection The port signals for the PIO-48.PC104 are physically connected via two 50-pin box headers. P5 provides the connections for ports A1-C1 and P2 provide the connections for A2-C2. These headers are compatible with the industry standard 50-pin ribbon/IDC type cabling. This allows for a direct cabling connection between the PIO-48.PC104 and a Solid State Relay Rack (i.e., PB-8.
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Page 15: Programming The Pio-48.Pc104
/ removal of the software and information about latency, logic states, and device configuration. For C language programmers we recommend using the API to access the PIO-48.PC104. If you are programming in Visual Basic, using the ActiveX control included with SeaI/O is advised. - Page 16 Port C2 RD/WR PC2D7 PC2D6 PC2D5 PC2D4 PC2D3 PC2D2 PC2D1 PC2D0 Base+B (11) Control Word Port 2 CW2D4 CW2D3 CW2D1 CW2D0 Interrupt config Port 2 Base+C (12) RD/WR IRQEN2 IRQC21 IRQC20 © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021...
- Page 17 0 or 1 (no effect) CWnD5 0 or 1 (no effect) CWnD6 0 or 1 (no effect) CWnD7 Control Word (X = 0) Hex Value Port Setup C Upper C Lower © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021...
- Page 18 Reading the INTSTAT port (Base+5) clears any interrupt pending. IRQST1 (D0) Interrupt status 1 = interrupt pending, 0 = none IRQST2 (D4) Interrupt status 1 = interrupt pending, 0 = none © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021...
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Page 19: Electrical Characteristics
Electrical Characteristics The PIO-48.PC104 uses 74LS245 octal bi-directional transceivers to provide TTL input/output capabilities. Each bit is pulled to +5V through a 10K ohm pull-up resistor to ensure each bit is at a known state when not driven. © Sealevel Systems, Inc. -
Page 20: Specifications
Sink 24mA Temperature Range 0°C – 70°C Operating -50°C – 105°C Storage Power Consumption Supply line +5 VDC Rating 794 mA Physical Dimensions 3.550 inches (9.017cm) Length Height 3.775 inches (9.589cm) © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021... -
Page 21: Example Circuits
Example Circuits © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021... -
Page 22: Appendix A - Troubleshooting
5. Always use the Sealevel Systems diagnostic software when troubleshooting a problem. This will eliminate any software issues from the equation. If these steps do not solve your problem, please call Sealevel Systems’ Technical Support, (864) 843- 4343. Our technical support is free and available from 8:00 A.M.-5:00 P.M. Eastern Time Monday through Friday. -
Page 23: Appendix B - How To Get Assistance
If possible, please have the adapter installed in a computer ready to run diagnostics. 3. Sealevel Systems provides an FAQ section on its web site. Please refer to this to answer many common questions. This section can be found at http://www.sealevel.com/faq.htm... -
Page 24: Appendix C - Silk Screen - 3701 Pcb
Appendix C – Silk Screen – 3701 PCB © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021... -
Page 25: Appendix D - Compliance Notices
Always use cabling provided with this product if possible. If no cable is provided or if an alternate cable is required, use high quality shielded cabling to maintain compliance with FCC/EMC directives. © Sealevel Systems, Inc. 3701 Manual | SL9127 7/2021... -
Page 26: Warranty
Sealevel's commitment to providing the best I/O solutions is reflected in the Lifetime Warranty that is standard on all Sealevel manufactured I/O products. We are able to offer this warranty due to our control of manufacturing quality and the historically high reliability of our products in the field. Sealevel products are designed and manufactured at its Liberty, South Carolina facility, allowing direct control over product development, production, burn-in and testing.
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