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#16 | |
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![]() ![]() Join Date: May 2017
Location: MA
Posts: 345
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Quote:
I already scheduled time. Regards |
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#17 | |
Member
![]() ![]() Join Date: Jun 2007
Location: uk
Posts: 1,337
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Quote:
Nobody is going to give the OP an open order for x amount of hours (if they do then more fool them) you need to look at the application and assess it's scope and your capabilities against that, if it's 50 I/O of basic program then 20 hours will do the job, if its PID, data logging, complex interlocking, flashy HMI graphics, SCADA top end then that's a whole different job. When i contracted i wouldn't even offer a quote until i had seen a spec or had an initial meet, then submitted RFI's if required, then when you are happy its withing your capabilities (not everything is all the time) put some figures on the table, at point of order develop a DesOps or Scope document to protect yourself and the customer so there are no surprises when he turn round and says "oh i thought you would juts do that anyway, you are the expert" Go into this unprepared by using other peoples rates and you are going to get bitten and end up working for $0.01 an hour unless you are careful. |
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#18 |
Member
![]() ![]() Join Date: May 2013
Location: Western SC
Posts: 131
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Also do not forget markup for profit. Bill out your people at a higher rate than you pay them. 20% is usual markup.
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#19 |
Member
![]() ![]() Join Date: Mar 2013
Location: Tulsa
Posts: 15
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With all the details given (very little)
if a hard price is really needed, I would say $900,000 in 3 draws. |
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#20 |
Lifetime Supporting Member + Moderator
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Interesting.... nothing down? I usually like to cover the hardware with a down payment
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www.PLCCable.com PLC Communication Cables, PLC Trainers, Fluke Meters, MicroLogix, ControlLogix, Siemens, Allen Bradley and more... all your automation needs... ((NEW)) After Market 1784-U2DHP Allen Bradley USB to DH+ and Gateways |
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#21 | |
Lifetime Supporting Member
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Quote:
Between doing and re-doing the PLC code to fit whatever whim the plant engineer was favoring that day, to trying to attend to a Project Manager who thought that the best way to ru(i)n the project was to have my old partner in meetings half of the day to ask him why he wasn't finished, I doubt that they made a dime on that job. That same PM tried to make all of us sit in on one of his marathon meetings, I quickly found something else to do, and somewhere else to do it. ![]()
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Just because you can doesn't mean that you should... |
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#22 | |
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Location: Detroit, SouthEast Michigan
Posts: 3,302
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Quote:
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"You can live to be a hundred if you give up all the things that make you want to live to be a hundred." Woody Allen |
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#23 |
Lifetime Supporting Member
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Location: Alberta
Posts: 894
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One million dollars..... Hahaha jk
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Dan Wiebe ----------------- Automation Manager Phoenix Energy Services |
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#24 | |
Lifetime Supporting Member
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Quote:
To be fair, they have gotten a lot better, the first versions of "Common Controls" in GA were uncommonly bad...
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Just because you can doesn't mean that you should... |
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#25 |
Lifetime Supporting Member
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Just because you can doesn't mean that you should... |
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#26 |
Member
![]() ![]() Join Date: Mar 2014
Location: JOHOR
Posts: 1,447
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Plc rm7500
hmi rm2500 |
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#27 |
Member
![]() ![]() Join Date: Mar 2014
Location: JOHOR
Posts: 1,447
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Plc rm7500
hmi rm2500 |
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#28 |
Member
![]() ![]() Join Date: Nov 2016
Location: Fields of corn
Posts: 1,221
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This is unlikely to fly with some companies... still worth trying though. The reason being that should the company go under, the material that has already ben paid for isn't in the hands of who paid for it. I've been lucky in the past that the company went under just before we issued the PO, so there was no payment taken...
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#29 |
Member
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I usually get a down payment that covers all the hardware and covers the value of my time up to the next benchmark (not any profit - that is usually the payment(s) after commissioning.)
And, remember for GM that they require CAD prints using E-Plan, a significant investment ($10,000 - 24,000) for an independent businessman. I have not done any work directly for GM (have done builds for Tier-1 suppliers) but the first one I do will have to have the cost of E-Plan worked into the quote somewhere.
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Never underestimate the quality of idiots that will be running your machines ![]() http://aabeck.com |
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#30 | |
Lifetime Supporting Member
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Quote:
That is tongue in cheek but most end users will refine and refine and add and change to HMI design until forever if there is nothing defined up front. Define a set number of screens Design the screens first and get sign off before doing the PLC if possible. Otherwise, you may find yourself writing logic for things that don't exist or missing base code that will make things easier down the road. There is a huge difference between an HMI designed just to replace pilot lights and pushbuttons and one using a lot of advanced features like time stamped alarms, data base integration, alarming, recipes etc. Depending on your knowledge level and experience, put in at least 1 day just to deal with communications between the HMI and PLC.
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