10/25/2011 5:55 PM | |
Posts: 5225 Rating: (1193) |
Hi, Sorry to ask.. is the PLC a new PLC or is it loaded with a program? Make sure that the PLC is powered correctly.. with a good earth connection. It sometimes help communication if you have your laptop disconnected from main power. If the PLC does not contain a program you wish to save then you can wipe its memory. Try the following program to wipe the memory of the PLC and restart as if a new PLC: S7-200 wipe out DOS program I have used this program where I have forgotten the password on a machine. The communication speed will be reset to 9,600 baud. (I'm sure it does not apply here, but I will say it in any case..) Also note that the USB program cables can be sentimental at times. First connect your USB program cable and then open Microwin - this is a sure way that the communication will work. Please let us know of any progress.. or lack there of. (I just hope your 5V or communication port did not give up and die!?) ]-] good luck [-[ --William |
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