SeaLevel LATCH-16 Bedienungsanleitung

LATCH-16

PART #3097

USER MANUAL

LATCH-16

User Manual | 3097

Contents

CONTENTS...........................................................................................................................................................2

INTRODUCTION ................................................................................................................................................... 3

BEFORE YOU GET STARTED ...............................................................................................................................4

INSTALLATION ....................................................................................................................................................5

CARD SETUP ........................................................................................................................................................5

PORT ENABLE / DISABLE....................................................................................................................................6

TECHNICAL DESCRIPTION ................................................................................................................................. 6

SOFTWARE INSTALLATION................................................................................................................................8

SPECIFICATIONS ...............................................................................................................................................10

APPENDIX A – TROUBLESHOOTING................................................................................................................11

APPENDIX B – HOW TO GET ASSISTANCE .....................................................................................................12

APPENDIX C – COMPLIANCE NOTICES ..........................................................................................................13

WARRANTY ........................................................................................................................................................14

Introduction

Latching relays retain their state until they are changed by the user. Power conditions do not affect the

latching relays; therefore, the PC can be powered up or down without altering the state of the latch. Latching

Relays have two coils as compared to normal relays , with one coil. The two coils are labeled "set” and

“reset”. When either “set” or “reset” coil is energized, the relay switches to that state and remains there until

the opposite coil is pulsed. This allows “non-volatility” in the relay circuit. The Sealevel LATCH-16 provides

two 8-bit latching relay output ports. This allows the user to set the LATCH-16 to a desired state, which is

unaffected by power loss or interruption. The 16 relays remain in the desired state regardless of the power

up / down condition of the PC. Software examples are included to help minimize development time.

Before You Get Started

What’s Included

The LATCH-16 (3097) is shipped with the following items. If any of these items are missing or damaged,

please contact Sealevel for replacement.

•LATCH-16 (3097) 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.

Important

The middle level of importance used to highlight information that might not seem obvious or a

situation that could cause the product to fail.

Note

The lowest level of importance used to provide background information, additional tips, or other

non-critical facts that will not affect the use of the product.

Installation

Be sure to set the Address and Jumper Options before installation.

The LATCH-16 can be installed in any of the PC expansion slots, except J8 on the original IBM "XT" and

Portable. Remove the PC case, remove the blank metal slot cover, and insert the board. Replace the

screw, replace the case, and the installation is complete.

Card Setup

Address Selection

The LATCH-16 relay output board occupies a total of four consecutive I/O locations. A dip switch is used

to set the base address for these locations. 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.

The address line A9 is always “1”.

Address

Binary

Switch Setting

Hex

A8 A0

300-303

1000000XX

Off

304-307

1000001XX

Off

310-313

1000100XX

Off

314-317

1000101XX

Off

320-323

1001000XX

Off

3A0-3A3

1101000XX

Off

Figure 1 - Address Selection Table

The following table shows the correlation between the dip switch setting and the address bits used to

determine the base address. Assume 300 Hex to 303 Hex is the desired base address. 300 Hex=11 0000

0X in Binary.

Switch Position

Address Line

Binary

Switch Setting

N/A

Always a 1

OFF

Figure 2 - Addressing Example

Setting the switch “On” or “Closed” corresponds to a “0” in the address, while leaving it “Off” or “Open”

corresponds to a “1”.

Port Enable / Disable

The LATCH-16 can be enabled or disabled with switch position 8 on the dipswitch. The port is enabled with

the switch "On" or "Closed" and disabled when "Off" or "Open".

Technical Description

The LATCH-16 provides two eight bit latched relay output ports. Latched Relays maintain their set or reset

condition until set or reset again, regardless of power conditions. This allows the user to set the LATCH-16

relays in a required state and power down the computer. When a change is required, the user can simply

set or reset the relay(s) again.

The terms “set” and “reset” are used to define the state of the relay. Set means that the relay “S” coil

has been energized, and the relay contacts are closed. Reset means that the relay “R” coil has been

energized, and the contacts are open.

The Latch-16 is easily programmed as simple Port I/0. To set a relay, the corresponding bit in Base+0 (or

Base+2) must be written as a “0”. To reset a relay, the corresponding bit in Base+1 (or Base+3) must be

written as a “0”. Writing to any of these registers causes a 6 mS. (Millisecond) pulse generator to energize

the relay coil. This particular hardware approach was chosen to keep the controlling software from having

to use timing routines and perform tedious I/O operations.

While setting or resetting individual bits requires only one I/O write, writing a byte of data to the port

requires writing both the set and reset register. This is because only the “0” bits in the byte cause a set

or reset operation. Therefore, to write a byte (55 Hex) to Port A, first write a 55H to Base+0 and write the

complement (AA Hex) to Base+1.

Again, writing to these registers causes a 6 millisecond (mS) pulse to be applied to the relay coil. You must

avoid successive writes as this 6 mS pulse is necessary to energize the relay. By reading the registers at

Base+1 and Base+3 you can determine if a write is in process and wait until it is finished before initiating

another cycle. The status of the relays may be read back from Base+0 (K9-16) and Base+2 (K1-K8). Please

note that when reading the status of the relays, a set bit (1) corresponds to an Open relay and a clear bit

(0) corresponds to a Closed relay.

Read Operations

Base+0 An I/O read to Base+0 will return the status of the relays K9-K16. Reading a zero (0) indicates that

the relay is closed. (Port A see Figure 3 for actual Relay / Port-bit locations)

Base+1 An I/O read to Base+1 will return a 0 in bit position D0 if a write to Base+0 is in progress (Set A).

An I/O read to Base+1 will return a 0 in bit position D1 if a write to Base+1 is in progress (Reset A).

Base+2 An I/O read to Base+2 will return the status of the relays K1-K8 . Reading a zero (0) indicates that

the relay is closed. (Port B see Figure 3 for actual Relay / Port-bit locations)

Base+3 An I/O read to Base+3 will return a 0 in bit position D0 if a write to Base+2 is in progress (Set B).

An I/O read to Base+3 will return a 0 in bit position D1 if a write to Base+3 is in progress (Reset B).

Output Functions: Input Functions:

Base+0

Set relays on Port A (Relays K9-K16) Read status of relays K9-K16.

Base+1

Reset relays on Port A (Relays K9-K16) Read status of pulse generator (Port A).

Base+2

Set relays on Port B (Relays K1-K8) Read status of relays K1-K8.

Base+3

Reset relays on Port B (Relays K1-K8) Read status of pulse generator (Port B).

Software Installation

Windows Installation

Do not install the Adapter in the machine until the software has been fully installed.

Only users running Windows 7 or newer should utilize these instructions for accessing and installing

the appropriate driver via Sealevel’s website. If you are utilizing an operating system prior to

Windows 7, please contact Sealevel by calling 864.843.4343 or emailing [email protected] to

receive access to the legacy driver download and installation instructions.

1. Begin by locating, selecting, and installing the correct software – SeaIO Classic Digital I/O Drivers.

Select ‘Download Now’ for the SeaIO Classic for Windows. In the Downloads section: select “SeaIO

Classic for Windows.” The setup file will automatically detect the operating environment and install

the proper components. Next (depending on your browser) select the ‘Run this program from its

current location’ or ‘Open’ option. Follow the information presented on the screens that follow.

During setup, the user may specify installation directories and other preferred configurations. This

program also adds entries to the system registry that are necessary for specifying the operating

parameters for each driver. An uninstall option is also available to remove SeaIO files and

registry/INI file entries from the system.

2. If installing in NT, skip to step 11. ‘Windows NT Card Installation.’

3. Go to the “Add New Hardware Wizard” in the Control Panel.

4. When the Wizard asks if you want Windows to search for the new hardware, choose “No, I want to

select the hardware from a list.”

5. 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.’

6. Click “Next.”

7. Select the card model and press “Next.”

8. The Wizard will guide you through a few more informational prompts; continue to click “Next” until

it is completed.

9. Your card’s resource assignments may be adjusted through the Device Manager (if, for instance,

you need to change the I/O port address Windows assigned when you installed the card).

10. Windows software installation is complete

11. Windows NT Card Installation: After accomplishing steps 1 – 6, 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.

For additional software support, please call Sealevel Systems’ Technical Support, (864) 843-4343. Our

technical support is free and available from 8:00 AM - 5:00 PM Eastern Time, Monday through Friday. For

email support contact: support@sealevel.com.

Port A

K13

2,20

K14

3,21

K15

4,22

K16

5,23

6,24

K10

7,25

K11

8,26

K12

9,27

Port B

10,28

11,29

12,30

13,31

14,32

15,33

16,34

17,35

Power and Ground

Locations

Ground

18,36,37

+ 5 Volts

+ 12 Volts

Figure 3 Bit, Relay and Connector Pin Positions

Specifications

Environmental Specifications

Specification Operating Storage

Temperature Range 0º to 50º C (32º to 122º F) -20º to 70º C (-4º to 158º F)

Humidity Range 10 to 90% R.H. Non-Condensing 10 to 90% R.H. Non-Condensing

Performance

MTBF > 150,000 Hours

MTTR < .25 Hours

Turnaround For Repair 5 Working Days

Manufacturing

• IPC 610-A Class-III Standards adhered to with a 0.1 visual A.Q.L. and 100% Functional Testing.

• Boards are built to UL 94V0 rating and are 100% electrically tested. These printed circuit boards

are solder mask over bare copper or solder mask over tin nickel.

Power Consumption

Supply line +5 VDC

Rating 210 mA

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