Specifying current setting error: The set current 4A is actually 1.024A. And it writes 10.24A in the setup window.
Try replacing the attached file. You will have to select DL24M-H to get the adjusted values.
The scale factor is controlled with these two lines in the file:
#scpiCmd setCurrent tx 2 (value/0.256) *dd
#scpiCmd setCurrent? rx? 0x17 /1000
You did not have any software version for the new software you programmed the load with?
Everything works except setting the current through the setup window. Attached is a link to a video where I tried to show it.
When entering the current 1A, 2.56A will appear in the setup window, but the load display of 0.256A and 0.256A also flows with the load.
When entering the current 10A, 25.6A will appear in the setup window, but the load display 2.56A and 2.56A also flows with the load.
When the current 4A is entered, 10.24A will appear in the setup window, but the load display 1.024A and 1.024A will also flow through the load.
Always the same multiples of the entered value.
I think it's a program bug I can't fix. (If this cannot be corrected by changing the program, I can work with it, because the required current can be set with the buttons on the load display). Everything else can be set up correctly in the Setup window. The load goes through the Setup window on and off, as well as reset all measured values.
I bought the load through Bangood,
https://www.banggood.com/DL24M-H-2-200V-600W-3mA-40A-Electronic-Load-Voltage-Indicator-Power-Bank-Battery-Tester-18650-Pack-Capacity-Monitor-Checker-Tool-p-1934895.html?cur_warehouse=CN&ID=6292512&rmmds=searchI downloaded the original Chinese PC software from the site
https://www.mediafire.com/file/9doutmib3epm2a1/01-DL24M_DL24_electronic_load_software_V1.0.2_version.zip/fileThe load works with it, but it's unsatisfactory for me.
I tried to use the load with TC ver.2,6, but I had big outages in the current record. I didn't know where the problem was, so I decided to upgrade the firmware using a Chinese upgrade file
"03-DL24_M (0-600W) firmware upgrade V1.4.bin", which is part of the supplied Chinese program. Since then, the burden has only worked with the Chinese program (which does not suit me). You already know ...
I do not dare to change your program and make mistakes in it that would spread further, so I would ask you to change your program. I would recommend writing a new device "Atorch DL24M-H 600W upgrade" in the device offer and implementing the necessary changes into the program under this name.
I will continue to test.
Before upgrading the load, I have one measurement: picture DL24M-H-16. It was recorded with TC ver 2.06 using a program for DL24P.
We see that at the set constant current CC 10A, the current record constantly drops out (blue curve). There are two random dips on the voltage record (red curve).
After the upgrade, I also have one measurement so far: picture DL24M-H-17. Recorded in TC ver. 2.11. using the program for DL24P. (we will then fix it on "Atorch DL24M-H 600W upgrade")
In the hourly record of discharging the Li-Ion battery (21700, 5000mAh) in the CC mode with a current of 4.963A, there was only one outage on the capacity recording curve (black curve) at 9:00 min. The other curves are flawless. I estimate the measurement error (this is not a TC problem, of course) at 1-2%, which is excellent for me.
Great, great! I'm excited.
https://drive.google.com/file/d/1_aAY73KxDro_nJ3oADfc6ILxnqmRY563/view?usp=sharing