JCI PMI question

[davem]

It's been way too many years since I last played around with PMI, so I've forgotten a couple things - today I needed to map in some points when the end user replaced a failed LCP with a DX-9100. Anyway, I need to take the OAT from a nearby AHU, and map it into an ACO on the DX. Since I never learned GPL, is there another way to do this?

[freddy-b]

It's been way too many years since I last played around with PMI, so I've forgotten a couple things - today I needed to map in some points when the end user replaced a failed LCP with a DX-9100. Anyway, I need to take the OAT from a nearby AHU, and map it into an ACO on the DX. Since I never learned GPL, is there another way to do this?

JCBASIC.

[exwtk]

GPL would be the easiest. You can also use JCBasic
Following example creates an object "Export" that you can download to the NCM after you compile it.

=============

PROCESS 'DX-SYS\Export' "" '\NC-NAME'
PERIOD 00:05:00
PRIORITY 4

TELL 'DX-SYS\OAT' TO "SET_AOS" 'AHU-SYS\OAT\VALUE',2

END PROCESS

===========

Replace following with names applicable to your system
DX-SYS\OAT = System and point name for OAT in system used by DX9100 (the ACO)
AHU-SYS\OAT = System and point name for OAT in system used by AHU
NC-NAME = the name of of the NCM

[davem]

Thanks guys - I'd totally forgotten about JCBASIC (I told you it'd been a few years...), and you can't get much more precise an answer than ex's...thanks, exwtk!

[simux]

I added some more lines that could let you select the lowest outside air temperature if you have more than one sensor!!!!!

PROCESS 'DX-SYS\Export' "" '\NC-NAME'
PERIOD 00:05:00
PRIORITY 4

IF 'AHU-Sys1\OA-t' >= 'AHU-Sys2\OA-t' then

OAT' = 'AHu-Sys1\OA-T'

else

OAT' = 'AHU-Sys2\OA-T'

TELL 'DX-SYS\OAT' TO "SET_AOS" 'AHU-SYS\OAT\VALUE',2

END PROCESS

===========

Replace following with names applicable to your system
DX-SYS\OAT = System and point name for OAT in system used by DX9100 (the ACO)
AHU-SYS\OAT = System and point name for OAT in system used by AHU 1/2
NC-NAME = the name of of the NCM Process

[davem]

And all went well, until PMI reported that the compiler wasn't installed, adn to contact Johnson for the software - yeah, I don't think so... Now the customer's own "controls expert" can finish up that little piece.
Thanks again for the help!

[exwtk]

I added some more lines that could let you select the lowest outside air temperature if you have more than one sensor!!!!!

Your code selects highest OAT ..... not lowest !!

Why would you want to select highest or lowest OAT..... Shouldn't both OAT sensors have the same reading ???

[simux]

Your right here's the corrected JC Basic. Also most outside sensors will read differently!!!!

PROCESS 'DX-SYS\Export' "" '\NC-NAME'
PERIOD 00:05:00
PRIORITY 4

IF 'AHU-Sys1\OA-t' <= 'AHU-Sys2\OA-t' then

OAT' = 'AHu-Sys1\OA-T'

else

OAT' = 'AHU-Sys2\OA-T'

TELL 'DX-SYS\OAT' TO "SET_AOS" 'AHU-SYS\OAT\VALUE',2

END PROCESS