DoctorFrogman

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About DoctorFrogman

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  • Country Denmark
  1. HART current ratio - What is this?

    Hello fellas. I'm trying to learn to use the HART functions of a FLEX i/o 1794 input card, and I have most of it figured out. There is this setting though, called HART current ratio, which allows a selection of disabled, or 5% to 31%. I can't figure out what it does though. The "HELP" guide explains that it is a threshold percentage for forcing HART read back indication (Input signal deviation HART to analog) but I am quite unsure what this means. Is it the allowed deviation that the analog signal can have, compared to the transmitted HART data? Hope the question makes sense, cheerio.
  2. Hello fellas. I am having trouble with understanding the communication between my AB PLC and my Balluff BNI0085, which is connected through an IFM AL1120 IO-link deivce. I am currently running a setup with an AB PLC (L18ER) that is connected to a local network through a network switch. I have connected my IFM AL1120 to this switch, and the IP configuration for both devices have been completed. The communications are made by using two add-on instructions, supplied by Rockwell: The BMC_AOI_PROC_BNI0085 instruction (For the Balluff smartlight), and the Generic_4PORT_IOL (For the IFM IO-link). I have additionally been supplied an ACD-file by my ex-coworker, containing a program that administrates the communication between the two add-on instructions. I have attached the routine from this as a PDF. What works: I can go online with my PLC, and by using the parameter "BNI0085_Mapped_Data.O" I can control the smartlight. I can change the settings for light-mode (Segment, Level, Runlight, Flexible), and the different parameters for each mode. What's the problem: When I change the Mapped_data.O to run in level-mode, I can adjust the light to show the level desired. When I try to adjust the level above halfway, the light switches off, and can't seem to be steady lit (Light turns on/off, random dimming). I speculate this might be due to the small power supply for the IO-link device, and the setting for brightness is not included in the AOI for the smartlight.  I therefore tried to adjust the brightness by connecting through the LR-device software from IFM(The same used to configure the IO-link). I added the IODD (IO-link device description, "Balluff-BNI_IOL-802-102-Z037-20190215-IODD1.1.xml") for the smartlight, and connected the device, which is discovered in the device list once the IO-link IP has been entered. I can read the values from both the IO-link and the BNI0085 devices, and I can write parameter settings to the IO-link device. Whenever I try to edit any parameter for the smartlight, I get the error attached. I am currently trying to follow the SmartLight userguide for the Balluff, as it describes the brightness setting as being in the ISDU index 51hex, but I don't know how this pertains to the AOI.   I am in over my head with this issue, and I don't know what information is needed or what is unnecessary. I've tried to include all that I think is relevant, I'll gladly provide what might be missing.  Any help is greatly appreciated, cheers :)   Balluff_smartlight_com_MainRoutine.pdf