Guest jBetts Posted April 28, 2004 Report Posted April 28, 2004 We use all sorts of PLCs here, but this one is quite unique. Here's the problem (as obvious as it may seem): In order to get a Unitronics Vision260 on an ethernet LAN, you have to write an ETHERNET CARD INIT right into the ladder of the plc...seems easy but its kindof confusing. I was just wondering if anyone on here has used these and has gotten this to work. Follow-up problems are as such: I think you need a Power-up bit to initiate this when the plc goes through startup. Bad point is, the operators frequently cut the power (for reasons unbeknown to me, but they just feel the need to do this), and I can't figure out how to actually make the plc go through a startup. So when you turn it on, there's some bad code because it calls for the startup that isn't happening and bam, no worky. After that you can initiate ports and sockets and the whole deal. I followed the example code exactly, but even if I restarted the PLC with the code in, it would not connect. If anyone can shed a bit of light on this, I'd be grateful. Time for automation-headache aspirin for me. Josh Quote
Guest Avner Barak Posted May 23, 2004 Report Posted May 23, 2004 Dear Sir I would like to try and help in the problem you describe here. The Card INIT utility is usually called on Power up since it makes a lot of sense to INIT things on the first cycle of the PLC. You say that you did it but the problem you have is that the users cut power off. To my understanding this should have no effect over the system since once power will come back the Power up bit (SB 2) will be active again and will start up everything. Assuming you are not changing the way the sockets we open work there is no need to do the socket INIT, we open default sockets as you do the card INIT. Assuming the users don’t cycle power on the PLC, do you get it to work, since I see two problems here, your ability to connect over the LAN and the power up problem as you describe it. I would like to invite you to copy this question to the Unitronics tech support team and I'm sure it will be resolve. The address is support@unitronics.com Good luck Quote
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