AlexUT

Hi all! I found 2 critical problems with SD cards, when SD card is not detected at all, or detection take long time - more than 1 minute. 1.When SD card include non 8.3 named files. Such files will be created by some PC applications. I found one of such application is automatic disk defragmenters. Such software cteate hidden long name files on each SD/Disk on key, etc. devices, connected to PC USB port. Solution - use PC which have no such software installed, or uninstall it. Format of SD card is recommended to restore its normal condition. 2.SD card lost its capacity.Solution - download Panasonic SD card formatter from site and re-format SD card with RESTORE CAPACITY key. I restored number of SD cards by this software. 3.Do not use cheap SD cards of unknown manufacturers. I failed with such 8 GB card of unknown manufacturer in Saturn store, Germany. Bought it to have SD/Mini SD/Micro SD adapters. But SD card is not working from the box. 4.Use Safely Remove Media icon to remove SD card from PC. I hope this helps.

Hi, For better help please provide more information, like RTD nominal resistance, link to RTD specification, full RTD model number (see p. 4 of document). etc. It seems, that you are talking about next RTD: http://ultra-nspi.com/product_groups/nuclear/nuclear_pdf/Models_601.pdf Current parameters you mentioned are for maximum RTD load, which in most cases is not reached. From this document follows, that there are 4 models of RTD sensors, 2x100 ohm, and 2x200 ohm. Unitronics PLCs supports 100 ohm RTD. You are not referring to PLC model. You can read V350 RA22 settings for RTD at following link: http://www.unitronics.com/Downloads/Support/Technical Library/Vision Hardware/Vision350 Installation Guides/V350-35-RA22_J_DOC13005-A3_06-13.pdf You have to configure Analog Input by jumpers, see page 4 and 6 for details, then configure it in VisiLogic Hardware Configuration as PT100 with corresponding "alpha" coefficient. Then in linked to this Analog Input MI you will have temperature in 0.1 C. having 235, you have to read it as 23.5 C. I hope this helps you to set it up. B.R.

Hi, As soon as this hall sensor is rated for 5-24 V and have NPN open-collector output, and it is rated for 50 mA, it will be used as source of digital signal for digital input. Use npn (sink) high-speed counter configuration.

Hi, You can read Data Table column into vector of 360 MIs. Then make SUM into ML or DW, then divide by 360. If you are interesting in right rounding - check SDW 4 or SL4 and correct result. B.R.

Hi Use first Drum step with 00:00:00.00 time. Then start is from second step. BR.

Hi pip4, Update OS stops PLC, replace OS, then start OS and Project. It seems that you have some Ladder code, disturbing to establish communication to PLC. Stop your Ladder code from Info mode and then test if communication can be established and project can be loaded. If you continue to have problem - send your project to support@unitronics.com for review.

Hi, Thank you for interesting in Unitronics PLCs. V430-TR34 PLC does supports simple PTO. You can configure it in Hardware Configuration - High Speed Otputs (Step Control). But this PLC model also have support for PTO - Pulse Training Output. This supports acceleration, deceleration, and other Simple Motion Control function. But before use this mode, you have to configure PTO. There is PTO example in directory: C:\Program Files (x86)\Unitronics\Unitronics VisiLogic_C\Examples\Version 900\Project examples\PTO\ V350_PTO example plus Jogging.VLP Look how it realized, and I hope you will like it. *Use only "PTO Read Status" without configuration is useless. I hope you can realize your PTO better. B.R.

Moran, 1.Trend have minimum sample time 0.1 sec. 2.As Joe say, Analog input is not so fast to sample 190 Hz. 3.Digital input does not sense levels, different from logical 0 and 1. So it cannot measure amplitude. 4.You can convert logical level to 0V/24V and use High Speed Counter to measure frequency, or period. But not signal amplitude. 5.With some kind of RC filter you can measure average of input signal by analog input. Trend will not show high frequency signal. This is not a scope.

Hi DavidThornton, It seems that Michael found and fixed problem. Modem you mentioned - ETM9400-1 - is not in supported modems list. So there is no warranty that it will work with GPRS. It may work, or may not work in SMS mode, when selected "Other..." type of modem. Enfora is supported for years, and in most of cases have no problems. Problems will arise, when cellular signal level is not good. *For Enfora modem minimum CSQ level is 11. For areas with a big signal fluctuation it is recommended to check, if antenna is not covered by trees, etc. If signal is low as result of weather condition - you have to check signal quality each 5-10 min., and make COM INIT until CSQ will show good signal. As well, antenna re-positioning, or use antenna with highest gain, may solve problem, or extend hours with a good cellular signal level. B.R.

Hi Johnny, I attempted to convert one of sample projects from Samba to V700, but have no such error. Please forward to support@unitronics.com your project. Add information about your computer, Windows OS version, Samba system files versions, used VisiLogic version. We will attempt to simulate this error. B.R.

Hi Pawks, Use -(S)- for SB 170 and SB 171. Does it works now? If not - please share with us: 1.What PLC model do you use? 2.What is an O/S version (and other system files versions) at used PLC? 3.What is a U90Ladder version you use? B.R.

Hi darknesspic, All snap-ins have support for maximum 2 High Speed channels. V130(B/W)/V350(Colour) TR34 have support for 3 PTO channels. What kind of movement do you need? -Speed - high, low, variable speed, stepper control with acceleration/deceleration, etc.? -One direction/both directions. B.R.

Hi Adrian, I will add to what Joe say. Referring to http://www.modbus.org/docs/Modbus_over_serial_line_V1.pdf Number of nodes will be up to 247. (node ID 1 to 247). 1 node is Master. Number of Slaves will be 246. Regular Hardware Transievers reliable supports up to 32 nodes in parallel. So, number of slaves is up to 31. Not so far from what Joe say. B.R.

Hi, Vinicator, After sending SMS to Modem for further processing, there is no easy way to manage SMS queue. Better p[ractice is to check SMS send result and act in accordance. 1)Do not send batch of SMS without checking result. 2)Allocate different memory registers for SMS SEnd status when you send more then 1 SMS. In this case it is simplest to eliminate problem then correct it. I hope this helps. B.R.

Hi Pawks, Jazz 2 (JZ20) does not support exponential function. Jazz 2 have limited Long support and no float point support. What kind of calculations do you need? What is a formula? What is an input and output numbers range? You can look at Internet, how to realize approximate exponent calculation in integer numbers. If you are in need of math functions, you can use Samba PLC, which have support of Exp function and Floating Point support. BR

Hi Pawks, What model of PLC do you use? What is a version number of U90Ladder?

Hi cscheda, Open "Menu->Project->Convert Project to Color->V430". Finish conversion. If selected PLC have the same IO assignment as source PLC - all IO assignment will be preserved. I hope this helps. B.R.

Hi, After installation of VisiLogic/U90Ladder examples are installed as well. Open "Menu->Help->Examples" and look for one you need. You can convert V120 examples to any PLC model you have. I hope this helps.

Hi tonymony, You are in Vision/VisiLogic branch of Forum. [unitronics Support Forum: Vision, M90/91, Jazz PLC HMI Controllers] There is no "big problem with Unitronics", as there is no problem at all. Vision controllers does not support any C/C++ code instead of Ladder. VisiLogic have Vector Functions to convert "Bits To Numeric" and "Numeric To Bits". See Menu->Vector->"Bits To Numeric" and "Numeric To Bits". Look in help how to use it. BR.

Hi maharadza, MODBUS reads 16 bit registers/tags. Even if you successfully read 2x16 bit tags in squential MIs, Jazz PLC does not support float point numbers and cannot process it. It is recommended to use other PLC, which have support of Floating Point numbers. For example, SAMBA PLC. Please post klea documentation, or link to manufacturer site. Example you posted have unbelievable for 32 bits Float Point numbers (IEEE 754) high precision of 10 digits. In accordance to IEEE 754, Single Precision 32 bit Float Point numbers have precision of 7.22 decimal digits. After mathematical operations precision will be 5-6 decimal digits. What you will do with received Float Point number? Only show on display? B.R.

Hi sunit, No, it is not possible. USB port is a Device port, not Host port. It does not support any types of converters.

Hi Andrey, Following is a link to Unitronics document http://www.unitronics.com/docs/technical-library/unitronics-devices-and-rs485.pdf "Unitronics Devices and RS485". It explains in details RS485 wiring. I hope this helps.

Hi, Is this question or answer?

Hi Jerther and Ausman, I agree that this is annoying, when SD card file system become corrupted. You can send your projects to support@unitronica.com with explanation of steps, how to reproduce problem, and other details, used SD card size and manufacturer, files size, etc. We will review projects and attempt to simulate problems. By the way, do you use any SD card extenders, or SD card installed inside PLC?

Hi All, Corrupted/incorrect file names appears as result of corrupted file system on SD card. Sending files to Unitronics Support will not help, as you cannot copy such files/directories. Recommended corrective steps: -Copy from SD card all not damaged files to PC. -Eject SD card and run chkdsk at PC or Laptop. Check if any found files can be used. *restored files may be largest than data inside files. -Make full format of SD card in windows, preferred by Panasonic SDFormatter. Then format SD card from SD card tools with unchecked Windows check box. -Install SD card to PLC. -Check number of files in SD card directories to keep number of files not more than 60 (64 in root directories). -Use right protection contacts for each file function. -SD card file system will become corrupted, if power failure will happen in the middle of file operation. Use UPS to eliminate file system corruption.