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Greetings Friends of LAVA, colleagues, cohorts, and Wireworkers Extraordinaire -- it's LAVA BBQ time! Change log for 2018: Prices have been rolled back to a previous, cheaper version New location, see below Date: Tuesday, May 22, 2018 Time: 7:30-10:00 pm Location: Uncle Billy's Brewery and Smokehouse, 1530 Barton Springs Rd, Austin, TX 78704 (1.5 miles from Convention Center) Cost: $25 Early Bird (through May 4th) $30 Regular Admission (through May 20th) $35 At the door (May 21st - 22nd) Meal Options: Expect to enjoy your choice of meats (brisket, turkey, ribs) with sides like mac and cheese, cole slaw, and potato salad. A vegetarian option is available when purchasing tickets. Cash beer bar. Who: Everyone is welcome, including spouses traveling with you. Even if it's your first time, expect to recognize many faces/names from the forums and NI R&D. What to wear: It's a covered, outdoor venue in Austin during Spring, so dress for the weather and comfort. Door Prizes: We will have a drawing to give away prizes. All attendees are eligible and will receive a door prize ticket upon entry. See below about sponsoring a door prize yourself to share the love. ------------>>------------>> Get LAVA BBQ 2018 Tickets Here <<------------<<------------ The venue is now a 30 minute walk from the convention center, or a $6 Uber. Get together and carpool, people are typically gathering at Challenge the Champions in Exhibit Hall 4, which is great fun. There is a free parking garage behind the building. We'd love for you to sponsor a door prize - Continue Reading: If you or your company want to sponsor a LAVA BBQ door prize, please post a reply below. You can also include a small blurb about your company and a link to your website in the post below. By donating a prize you and your company will receive a small announcement of your choosing, during the event. We will ask you to write the announcement on a post-it note and will attach it to the prize to be read before awarding it. We love the door prizes, but we love time for socializing too. Here are some guidelines to keep our event balanced and streamlined. Single item donations work best. If donating more than one item, then multiple identical items is strongly preferred. If donating non-tangible items or something that is not physically with you, then please bring a card with your contact info and instructions on how to collect the prize. This will be given to the winner. Donations are typically $25-$200 in value. Not recommended: Apparel (hats, t-shirts, underwear, etc.) - never the right size Software licenses (Toolkits, add-ons, LabVIEW) Branded trade show booth type giveaways (mouse pads, pens, keychains, etc.) Jokes or something meant as a gag and not a real prize Hope to see you there! Chime in once you buy tickets to let everyone know you're coming.

I really appreciate that you included a change log for the event. Looking forward to the BBQ as always.

My coworkers told me that this PLC did not have access authorization, but we need input PC IP on PLC to communicate, so it have access authorization setting. Now using IP setting configured on PLC its working well. Thanks!

Both libraries use zero indexing, so you should be able to use the same value for starting register and number of registers in both libraries. The 4xxxx (or 4xx,xxx) is not important at the protocol level. Its difficult verify whats going on because one function has a bunch of constants and the other is dynamic, but I'm assuming when your coworker tested it you've verified that: They have the same IP address and port you have They are using the same holding register start address and length They are hitting the button to make sure it actually reads the holding register rather than skipping that code If I'm understanding correctly, you ran the old code on your machine as well, and it failed? It sounds to me like the PLC has some sort of access control list, and your coworker added his machine to the list, but yours is not on it. This would make the most sense to me given that: His machine works and yours doesn't with identical code and settings The connection is being closed by the PLC The closure appears to be immediate (note that the error occurs at the "write" function, which is the very first TCP function called after connecting. This would indicate that the connection is opened and then closed before you even enter the while loop).