When I upload the next version later today try starting it in debug mode and send me the result.
As I have never done a debug before, this is what I have got with version 0.29...
I turned the rotary switch in both directions, logging any third second (maybe some values are duplicated).
pic.1 = before
During this procedure it suddenly worked (pic.2) and I also had the trendchart graph, so that I also got the measured items in the "Scales for chart" list (pic.3), however, I couldn't repeat this anymore...
;; Found Keysight U1273A on USB-Serial Controller (COM4) sn: MY...
#debug k1273
;; +modeComm +valueComm +otherComm +commHex
;; K1273: Tx <CONF?> 43 4F 4E 46 3F
;; K1273: Rx <"VOLT:AC +3.00000000E+00,+1.00000000E-04"> 22 56 4F 4C 54 3A 41 43 20 2B 33 2E 30 30 30 30 30 30 30 30 45 2B 30 30 2C 2B 31 2E 30 30 30 30 30 30 30 30 45 2D 30 34 22
;; K1273: Rx after :readmath: (value=="\"RES,8\"")?"nS":getElement(unQuote(value),0,",")+getElement(unQuote(value),2,","); <VOLT:AC +3.00000000E+00>
***Unfortunately "SPOILER" does not work?!*** ![Sad :(](https://www.eevblog.com/forum/Smileys/default/xsad.gif.pagespeed.ic.L3FGyzQrjB.png)
[SPOILER]
;; K1273: Tx <CONF?> 43 4F 4E 46 3F
;; K1273: Rx Timeout
;; K1273: Rx after :readmath: (value=="\"RES,8\"")?"nS":getElement(unQuote(value),0,",")+getElement(unQuote(value),2,","); <>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx Timeout
;; K1273: Rx as numbers <NaN>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx Timeout
;; K1273: Rx as numbers <NaN>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+7.73711000E-03> 2B 37 2E 37 33 37 31 31 30 30 30 45 2D 30 33
;; K1273: Rx as numbers <0.00773711>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+7.15034000E-03> 2B 37 2E 31 35 30 33 34 30 30 30 45 2D 30 33
;; K1273: Rx as numbers <0.00715034>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+2.41845000E-03> 2B 32 2E 34 31 38 34 35 30 30 30 45 2D 30 33
;; K1273: Rx as numbers <0.00241845>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <-1.03337000E-03> 2D 31 2E 30 33 33 33 37 30 30 30 45 2D 30 33
;; K1273: Rx as numbers <-0.00103337>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+3.65669000E-04> 2B 33 2E 36 35 36 36 39 30 30 30 45 2D 30 34
;; K1273: Rx as numbers <3.65669E-4>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+9.90000000E+37> 2B 39 2E 39 30 30 30 30 30 30 30 45 2B 33 37
;; K1273: Rx as numbers <9.9E37>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+9.90000000E+37> 2B 39 2E 39 30 30 30 30 30 30 30 45 2B 33 37
;; K1273: Rx as numbers <9.9E37>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+9.90000000E+37> 2B 39 2E 39 30 30 30 30 30 30 30 45 2B 33 37
;; K1273: Rx as numbers <9.9E37>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+9.90000000E+37> 2B 39 2E 39 30 30 30 30 30 30 30 45 2B 33 37
;; K1273: Rx as numbers <9.9E37>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+4.13511000E-12> 2B 34 2E 31 33 35 31 31 30 30 30 45 2D 31 32
;; K1273: Rx as numbers <4.13511E-12>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <-6.36479000E-07> 2D 36 2E 33 36 34 37 39 30 30 30 45 2D 30 37
;; K1273: Rx as numbers <-6.36479E-7>
;; *10
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <-6.10228000E-09> 2D 36 2E 31 30 32 32 38 30 30 30 45 2D 30 39
;; K1273: Rx as numbers <-6.10228E-9>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <-6.79764000E-09> 2D 36 2E 37 39 37 36 34 30 30 30 45 2D 30 39
;; K1273: Rx as numbers <-6.79764E-9>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <-6.16485000E-07> 2D 36 2E 31 36 34 38 35 30 30 30 45 2D 30 37
;; K1273: Rx as numbers <-6.16485E-7>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+7.30545000E-12> 2B 37 2E 33 30 35 34 35 30 30 30 45 2D 31 32
;; K1273: Rx as numbers <7.30545E-12>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+9.90000000E+37> 2B 39 2E 39 30 30 30 30 30 30 30 45 2B 33 37
;; K1273: Rx as numbers <9.9E37>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+9.90000000E+37> 2B 39 2E 39 30 30 30 30 30 30 30 45 2B 33 37
;; K1273: Rx as numbers <9.9E37>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+4.04093000E-04> 2B 34 2E 30 34 30 39 33 30 30 30 45 2D 30 34
;; K1273: Rx as numbers <4.04093E-4>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <-6.42135000E-04> 2D 36 2E 34 32 31 33 35 30 30 30 45 2D 30 34
;; K1273: Rx as numbers <-6.42135E-4>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+2.25822000E-03> 2B 32 2E 32 35 38 32 32 30 30 30 45 2D 30 33
;; K1273: Rx as numbers <0.00225822>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx <+7.26917000E-03> 2B 37 2E 32 36 39 31 37 30 30 30 45 2D 30 33
;; K1273: Rx as numbers <0.00726917>
;; K1273: Tx <FETC?> 46 45 54 43 3F
;; K1273: Rx Timeout
;; K1273: Rx as numbers <NaN>
[/SPOILER]