Opto 22

43044 Business Park Drive, Temecula, CA 92590 USA
Local & outside the USA:(951) 695-3000
Toll-Free within the USA:(800) 321-6786
Fax: (951) 695-3095
Email: sales@opto22.com

New SNAP Input Module Acquires Serial Data from Transducers

SNAP-SCM-SSI synchronous serial interface module

Do you need data from a linear or rotary transducer, or another device that uses the Serial Synchronous Interface (SSI)? If so, you'll want to check out our new serial communication module, the SNAP-SCM-SSI.

The SSI protocol is commonly used as an interface between an absolute position sensor and a controller, often in motion control applications. The SNAP-SCM-SSI features two isolated SSI inputs. It can decode both binary and Gray Code, and is software configurable to set clock speed, frame length, delay time between data samples, and other parameters.

The SNAP-SCM-SSI mounts on a SNAP PAC rack alongside other serial, analog, and digital I/O modules and requires a SNAP PAC brain (either EB or SB) or an R-series controller. The brain or controller needs firmware version 8.5c or newer, and you'll use PAC Manager 9.0 or newer to configure the module.


Productivity Tip: Get Fast Access to Just the Information and Products You Want

Fast access to Opto 22 information you need

If you're like most Opto 22 customers, you usually come to our website for specific information. Maybe you need to find SSR specs or a SNAP analog input module in the data sheet, or maybe you want the latest firmware for SNAP PAC controllers.

With a my.Opto22 account, you have two easy ways to get this information:

  • You can tag a product, document, download, or OptoKB article as a favorite so you can go right to it.
  • You can subscribe to receive an email alert when we update an item you use.

A my.Opto22 account also makes it possible to register software, sign up for training, buy products online, and save I/O unit configurations or BOMs you've created, so it's pretty useful. If you don't have one yet, you can register now.

If you already have an account, here's how to get the information you want.

Tag as a favorite

1. Find the product, document, download, or OptoKB article you're interested in. Let's say it's the SNAP Analog Input Modules Data Sheet (form #1065).

2. Near the top right of the page you'll see the SHARE & SUBSCRIBE icons. Click the star to tag this item as a favorite. The star becomes yellow.

my.Opto22 login


3. The next time you want to see the data sheet, look in the orange navigation bar on the right side of the website. If you're already logged in, click My OptoProducts. If you're not logged in, click Log In. (You'll stay logged in until you log out, move to another computer, or delete cookies.)

4. When My OptoProducts opens, click the Documents & KBs tab (since the data sheet is a document). To go to the data sheet, just click its name or form number.

Subscribing to a favorite in my.Opto22

Subscribe to email alerts

If the item is already a favorite, just click the gray O next to it in your favorites list.

If it's not a favorite, go to its page and click the gray O in the SHARE & SUBSCRIBE icons.

Once you've subscribed, the O is colored maroon.

All your alerts are combined into one email, delivered no more than once a day. You can change your subscriptions at any time.

In Argentina, a Combination for Success

Opto 22, Instrumentalia, and U.S Dept of Commerce Commercial Services host event

IO4AB (SNAP I/O for Allen-Bradley PLC systems), energy monitoring, and migration paths from FactoryFloor to the SNAP PAC System will be the main subjects at a special event in Buenos Aires, Argentina, on November 3.

Opto 22, our Distributor Instrumentalia, and the U.S. Department of Commerce's Commercial Services in Argentina will host the event for both current and potential customers.

For more information, contact Instrumentalia at +54 (11) 4932-3000.

IO4AB, el producto de SNAP I/O para agregar I/O a los sistemas PLC de Allen-Bradley, el monitoreo de energía y la migración de FactoryFloor a sistemas de SNAP PAC, serán los temas principales en un evento especial que será el 3 de noviembre en Buenos Aires, Argentina.

Opto 22, nuestro distribuidor Instrumentalia, y los Servicios Comerciales de los Estados Unidos serán los sedes del evento. Se ofrece el evento a nuestros clientes y también a los clientes nuevos.

Para más información, contacte a Instrumentalia al +54 (11) 4932-3000.

Tech Tip: Debugging PAC Control Strategies

PAC Control development software

Debugging your PAC Control strategy can take time, but these tips can help you.

It's usually best to start debugging by stepping through your strategy one flowchart block at a time. Before you start, though, remember that if you're debugging a running process, the speed you see the chart stepping through is the same speed your process will run. So make sure that limit switches and other parts of your process are OK at the slower debugging speed.

Changing debugger mode

Step Over button in PAC Control

In Debug mode, run the strategy, select the chart to debug, and then pause it. Use the Step Over button to go through the chart one block at a time. The Step Over button may be all you need to find any problems.

If not, try changing to Full Debug, so you can step into blocks to pinpoint problems. Full Debug is especially useful if you use OptoScript.

To change, go back to Configure mode, and from the Configure menu, choose Full Debug. Download the strategy again (because it downloads more information to support Full Debug). When you enter Debug mode again, you can step into any block and step through its instructions one at a time.

Once you've finished debugging, it's best to change back to Minimal Debug and download once more. In Minimal Debug, less information is downloaded to the control engine, so it's faster to download and run the strategy.

Changing debugger speed in PAC Control

Changing debugger speed

Debugger speed can affect Autostepping speed. To slow down Autostepping speed, you can change debugger speed.

1. In Debug mode, choose Debug > Options. Or in Configure mode, choose Configure > Options.

2. Click the Debugger tab.

3. Click and drag the slider to the speed you want. The default speed is shown in the figure at right. Since performance varies, you may need to experiment to find the best speed for your purpose.

For more on debugging, see the Debugging section in Chapter 7, "Working with Strategies" in the PAC Control User's Guide (form #1700).


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