jthornton
Member
What rule of thumb or SWAG do you use to estimate how long it will take to program a PLC?
I/O count?
Operator Interface screens?
Help!
Thanks
John
I/O count?
Operator Interface screens?
Help!
Thanks
John
Screamin said:Hello,
When I have quoted for projects I have used the following numbers as an approximation (dependent on complexity of system)
1-2 hours per I/O point
4 hours per PID set-up
4-6 hours per standard HMI screen (i.e. Panelview)
6-10 hours per SCADA or graphical user interface screen (i.e. Wonderware)
After that it all becomes a judgement call on complexity of system or graphics, experience at software package, experience at system, how many reusable code segments from previous similar projects, etc.
jthornton said:
My personal feeling is I don't charge much if anything for learing software. That is the way I did it when I programmed databases. I sleep better at night if I learn on my own time...
Wadduthink?
it is impossible for any one person to know everything (except for my wife, of course)
Pierre said:
And I was certain that my dear one was a unique model
Tom Jenkins said:I only charge for "learning time" on programming when I am using a new platform specifically at a customer request. Then it is priced accordingly into my quote - the rule is no surprises for the customer.