Pavel_setnicar

Using this https://vi.aliexpress.com/item/1005003091082827.html?spm=a2g0o.productlist.main.7.12f6nnNTnnNTgu&algo_pvid=6ea240c0-c56c-4f95-88b1-37e5953486df&aem_p4p_detail=202401100407583607811113199410007751814&algo_exp_id=6ea240c0-c56c-4f95-88b1-37e5953486df-3&pdp_npi=4%40dis!EUR!0.49!0.42!!!0.52!!%402101fb1a17048884783171605ee0d9!12000024024728654!sea!SI!111006486!&curPageLogUid=jQJKfO8xxbPs&utparam-url=scene%3Asearch|query_from%3A&search_p4p_id=202401100407583607811113199410007751814_4 but than you need to make this http://pencho.my.contact.bg/start/comp/rs232/unitronics-rj11.htm You can also buy it from Unitronics.

Putting PID stus messages on screen is a good idea. Autotuning did help but than situation repeated again so I installed new SAMBA with modified program to reset Integral error in case of windup or winddown (even if I do not know if it ever occured).I also display pid status. Now Im waiting for next call from client.

Yes , also encounterd the same in my app with SAMBA. For weeks it worked just great and then at some point output of the PID went 100% ad only autotune get rid off it. I did not check the PID status since I was not on site ,but costumer lost confidence in unitronics SAMBA. It is strange because it worked perfect for some time. Instalation is on wery remote site and I can not get all information in time (hidroelectric power generator). If windup would occour , should i get this symptome?

And arduino as I know operate on TTL signals logica l"1" is +5 0r 3V, logical"0"is 0V. Serial ports on samba are real RS232 signals (+-10V) where logical "1" is -10V and logical "0" is +10V.

I think this is about analog OUTPUT , and it is corect .

With a help of Daags instructions (I do not know where did he found them) I manage to get my samba 70 touchscreen work again. Before i did not manage to enter calibration mode since " x value" was always 799, only y changed correctly. Once in the calibration mode I simply touched little squares and voila it works. It seems that in eeprom which stores calibration values some glitches caused corruption.

Does it mean that till now you did not use interrupt ?

Maybe ......... I assume that you are using interrupt routine , right?

Thank you Zoran. Im also doing something with ethernet and it works fine, but ocasionaly connection drops and I need to reset my V570 to restore. "Inače" Im from Ljubljana- Slovenija. Salute to my "ex" brothers in Serbia. 😀😀

Can you tell where did you find "keep alive" and "keep master connection"please? Thank you Ps : are you from former YU m,aybe?

What about Radio modem?How far is the remote object? Is there eye sight beetween?

Also , are yours termocouples connected directly to the inputs of PLC or there are some extension cables between? There should be no other joints except on the PLC input.

in google I entered "12864e lcd" You can buy it new on several places : https://eu.mouser.com/ProductDetail/Microtips-Technology/NMTG-S12864EFGHSGY-10B?qs=%2Fha2pyFaduizYGWjYR47BYnmElLCHru%2BKxjPySDVgs0%3D https://www.ebay.com/itm/1PCS-Graphic-Matrix-LCD-Module-LCM-JHD-12864-E-128X64-/251054642593 https://www.aliexpress.com/item/AG12864EYI-AG12864E-12864E-2-New-LCD-SCREEN-LCD-MODULE-Yellow-green-original/32658324871.html https://www.aliexpress.com/item/AG12864EYI-AG12864E-12864E-2-LCD-module-replacement-product/32728511384.html

I would improvise with one of 1A mper rating which should be enough . But before that you should check all diodes and supressors around because it is highly possible that at least one of them have path to the ground and hopefuly that is what saved your PLC from surge peak.

En lugar de MI, use ML