soryy cr0sh, I'm getting a bit cr0sh-eyed in my old age and picked the 5th line from the top in error.
I'm almost certain there are actually 10 logarithmic divisions, it's just that the ninth one is so close to 10th it looks like a thicker line due to the rather poor graphics. So each line upwards represents a power increase of 0.1, so the WGS of 3.5V gives a current of 10^^0.5 = 3.16A ...
Let's start at 10^0; ok - next line up from that (closer to 10^1) is...? There are 9 subdivisions, so it should be 10^0.11, and the next 10^0.22...until 10^0.99999 (ie, for all intents, 10^1)...right? So, that line is actually sitting on the 10^0.5555 line, or about 3.6 amps...not 1.6 amps...
PROGRAM mainVARi : INT;END_VARi := 0;REPEATi := i + 1;UNTIL i >= 10;END_REPEAT;END_PROGRAM
I have no doubt that a competent PLC programmer can make these systems "sing and dance" to his will, it's probably just that the guy that did our system.. well .. sucked !
Do resistors have a specific direction, or can they be installed in any orientation?
Resistors work best when installed in a NNE direction. Which end points NNE and which points SSW does not matter.