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Showing results for tags 'labview'.
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cr_drew posted a topic in MitsubishiHello all! I am in a time crunch and must find a way to send a command to a few registers on a Q03UDVCPU from LabVIEW in short order. Having never used Mitsubishi PLCs or GxWorks2, my understanding is that MC Protocol over TCP is likely my best bet. Do this make sense, or am I missing an easier way? The current interface is a GOT, but I need to update a few things programmatically from my embedded controller. I have tried to use Wireshark on the Ethernet hub between the QCPU and the GOT, but only see a few "Who are you" broadcast packets. Does anyone know why I might not be seeing the network traffic I expect? Thanks in advance! Drew
roopesh.meleth posted a topic in OmronHello admin, Im new to PLC domain , i have one OMRON CP1E N30 with in built RS 232 port and ladder program to run in Homing and forward and reverse motion. I want to control the PLC from a computer using RS 232 communication. From what little i read from manual supplied for programming ,i came to know that there are two type of commands C mode as well as Fins commands. My doubt is whether these commands can read/write CIO memory addresses that are used to set and reset the motor enable/disable in ladder program through CX programmer software? for example: in my ladder program CIO memory address 30.00 is the motor enable/disable address so if i want to control externally from a PC to enable/disable the motor ,which commands should i use and is there a format to send these commands as well as the value. I am planning to build a GUI in Labview to cotrol the PLC via Serial RS 232 . How can i do it ? Thanks in advance.
Hi, I have been trying to communicate between a PLC(Mitsubishi FX3U) and Labview (using Data Socket) through a KEWserverEX OPC-server (using a RS232C COM Port cable). I have been successful at that by using baud rates ranging from 9.6kbits/s to 115.2kbits/s, with average reading time into Labview ranging from ~40ms to ~10ms (of course depending on baud rate) per value. However, this is too slow for our purposes, and we need it to be in the area of 1-3 ms per value. Are there any tricks to decrease the reading time between the PLC and Labview, or do we perhaps need an ethernet module? Kind regards Bjørnar