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Re: [EnergyPlus_Support] The operator "-" is missing the left-handoperand! message
Certainly the too long line is a problem. You need to solve that before you work on the other.
I would try breaking it -- though I am not sure that will work. You may have to set up variables to get everything accomplished.
You could also shorten your expressions (76.12375-45) to 31.12375
I believe we fixed the unitary - in one of the versions (maybe after V7.0). (so -3.56+15 should work but again could be shortened)
At 02:22 AM 3/15/2014, marko.ignjatovic1980@xxxxxxxxx wrote:
> How to overcome this issue?
> This is the error log after some simulations with GenOpt:
>
> ** Severe ** The operator "-" is missing the left-hand operand!
> ** ~~~ ** String being parsed="((56.04-80)/(-3.56+15))*OUTSIDEAIRSENSOR+80+15*((56.04-80)/(-3.56+15))".
>
> Also, in some logs there is this warning
> Warning ** IP: IDF line~15626 Alpha Argument length exceeds maximum, will be truncated= SET ControlValve = ((76.12375-45)/(9.799375-12))*OutsideAirSensor+45-12*((76.12375-80)/(9.799375-12))
> ** ~~~ ** Will be processed as Alpha=SET CONTROLVALVE = ((76.12375-45)/(9.799375-12))*OUTSIDEAIRSENSOR+45-12*((76.12375-80)/(9.799375-12)
>
> it leads to simulation crash.
> Can I brake EMS program line (SET ControlValve=((%supplytemp%-80)/(%outsidetemp%+15))*OutsideAirSensor+80+15*((%supplytemp%-80)/(%outsidetemp%+15)),) in half?
>
> Marko
>
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