The Craftmans Shop > New from Old
The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
awemawson:
So one of the 'post lightening strike' issues that I need to sort out is that back in 2018 I had made some alterations to the PLC code, and although the vast majority had been saved, my last alteration hadn't.
This is just to drive a solenoid valve to depressurise the coolant system when not being pumped, to allow the parts grabber (which is coolant powered) to open. I have hard copies of the minor change - it only involves two PLC segments - but not in a format that allows me to upload it as part of the normal reload procedure.
So today I took a trip down memory lane, re-learning how to connect my Win XP powered Toughbook running 'STEP5' to the PLC. Amusingly, the correct version of the PLC code is still showing within the program, but I've not yet rediscovered how to upload the local copy to the PLC. If all else fails I can edit the code within the PLC to match my printout, but that's cheating!
Now I have to say that having uploaded masses of screen shots when I was doing it back three years ago, it has been a very handy resource to set me on the right path, as believe me STEP5 is not at all intuitive !
:mmr:
awemawson:
This morning I managed to upload the PLC program file image from the Panasonic Toughbook via STEP5 to the PLC on the Siemens 820T controller. I did try directly editing the code in the PLC but it kept slapping my hand. I tested the coolant depressurisation, which was the modification that hadn't been backed up, and it works fine.
Back ups downloaded and put on two separate PC's in separate buildings along with a copy blown to CD and placed in the pocket inside the machine door - don't want to have to jump through these hoops again.
Still got the mystery of the error code numbers not being translated into text from the PCA file but that's not a show stopper. Conceivably it could be that little battery backed RAM card that I had to replace - maybe an oddity with the replacement. A further spare has arrived with my son in Houston yesterday and will be coming by shanks pony in due course.
hermetic:
"Shanks pony" yer can tek the lad outa Leeds etc etc!! Favourite phrase of my dad and grandad!!
Phil
awemawson:
And there was me thinking the whole world would understand, Phil, not just you :clap:
hermetic:
Damn, not Yorkshire, but Scotland, first written reference to it in 1729,
"This phrase seems to be of Scottish origin. It is first recorded in The Tea-Table Miscellany: Or, a Complete Collection of Scots Sangs, published in 1729 "
I had assumed its "wezzy" origin because I have seldom heard it used in East Yorkshire!
Phil, Arm deep in Fordson hydraulics!
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