Vision & Samba PLC + HMI Controllers & VisiLogic Software
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You're not going to "Find" it if you're not using it in your project. Just go to Operands, scroll to System Bits, then scroll to 168. There you can set the Power-Up to "Set". -
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I don't have time to test this either, but I can't imagine that this would be the only bit value that isn't retained during a power cycle (with battery).
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1 & 2 are mainly assuming SB168 is OFF. If it is already ON, which you'll find out during doing the following, then something else is astray. A "sudden" power loss might mean a very brief interruption, which can play havoc with some settings. 1). You would normally use Visilogic to see if it has a power up value of 1. SB168 is listed in System Bits. In any new project it defaults to being off, and you have to change it to a 1 in the power up value for the automatic recovery to occur. No other alterations needed to your program. Compile the program, save as a new name, then send it to the controller using whichever Download option you want to use. 2). If you don't have the program so that you can open it in Visilogic, you can manually get to SB 168 by using Info mode. Once you have got into Info mode, follow the screen messages to work your way through to SB168 and see whether it is on or off. Thinking on this a little more as I write, I suggest you actually do this in the first place. It will easily show whether the program is setting it on or not. If it's off, turn it on and see what happens with the connection. I'm not sure whether the ON setting is retained after a power cycle if the bit is set via this means......I've always set it in the program. It may hold onto it during a power cycle, but I don't think so. I simply don't know for sure and can't test it at present.... Either way, if it's off, change it to 1, run things and see if the connection is retained. If it's on, then I'd be looking at things in your control cabinet like Kratmel has spoken of, and also the possibility that power loss is causing large spikes that upset the ethernet system. Unclamped contactors and coils etc all shutting off at the same time will create problems, and not only for ethernet but the plc itself. cheers, Aus -
Yes, dropped conncetion with remote computer ! Where can i do that ? ( try setting SB168 to be a power up value of 1)
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