I've been using the CRC parameter in IQAN design for J1939 messages that require SPN 4206 (rolling counter) and SPN4207 (checksum). I can't find a configuration that works. I assumed that the "J1939 checksum" option was for SPN4207 but that doesn't seem to be the case (I just get checksum errors from the destination device). Am I missing something or is the CRC parameter not configurable for SPN 4207? I'm having to do it the long way around doing the calculation (it works but it's very messy). SPN4207 is a 4 bit checksum (as below), SPN4206 is a 4 bit rolling counter.

Checksum = 
(Byte1 + Byte2 + Byte3 + Byte4 + Byte5 + Byte6 + Byte7 + 
message counter & 0x0F + 
message ID low byte + message ID mid low byte + message ID mid high byte + message ID high byte)

Message Checksum = (((Checksum >> 6) & 0x03) + (Checksum >>3) + Checksum) & 0x07

Only first sections of the documentation are shown and there are no checkboxes to click to add more sections. Same project works well in 6.08 and 7.02.

Is there a workaround?

Hi,

Would anyone be able to provide me the download link of IQANdesign 7.05.25?

Thanks in advance!

7.05.27, MD5-8, G12

Whenever I connect via Bluetooth via laptop and try to measure it disconnects.

I can make modifications to the program but trying to measure is impossible.

How do I link the virtual digital input from MD5 display to the main MC43 controller?

I have problem getting my TSC1 work on volvo truck. Is here anybody that has gotten it to work and can give me some hints on how you have made it?

I have made it with 2 different J1939 with same source adress (thanks to this forum) because both want PGN230.

Volvo says that they have all the parameters activated that needs to be activated so it sounds that something is wrong on IQAN side.

I could not send the error report. IQAN Design 7.05.27.10982. Was adding a math channel to a function group and the software crashed with the following error message. Access violation at address 00000000018D6631 in module 'IQANdesign.exe' (offset 1406631). Read of address 0000000000000040. I reinstalled the software.

Has anyone had any success with integrating a IQAN using CAN Open to a modbus network? I see there are a variety of converters available from different manufactures.

Can anyone share a project file that has worked for them please?

It sounds as though a Modbus system would expect to see an address list of data sent to the network.

Currently have come to the conclusion that on bootup we get CAN error frames on chassis with 500k baud rate that are currently connected via CAN C, D of the MD4-7.  How is the boot up and initialization take place for the baud rate?  I have come to believe that the initialization isn't taking place correctly and is knocking out the 500k intermittently on startup.