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Change Source Address of Sensor
Good Afternoon,
For a project of mine, I am using a MHC0150MN06F3J013FD sensor from tempotronics with the source address of 253. I can reach this sensor using the JFIN channel on this source address with PGN65535. What I would like to do is add another of these sensors which have a standard source address set to 253 and change that source address to, for example, 252. I have looked into the datasheet of the sensor and it seems this should be done by changing Byte 9 on PGN 65240 using a JFOUT channel. My problem however is that I cannot reach Byte 9 because of the maximum length of 8 Bytes per data package of the J1939 protocol. In the IQANDesign datasheet, I can see the multi-packet option available (to send a second package for the source address) for the JFOUT function but in my IQANDesign 5 it does not show up in the property manager. Am I looking in the wrong direction here? Is there a standard function for changing the source address of a connected device?
Thank you in advance!
Kind Regards,
Roy den Drijver
Answer
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Thank you for your reply, it seems you are right, do you know of another way to change the source address of a sensor in IQAN Design 5? The reason that I cannot use IQAN Design 6 is that I am currently using an MC2 (for testing purposes) and want to know how to change the source address using this module.
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You would have to manually implement J1939 transport protocol for that message. I have not implemneted for a transmit message, but here is an example for a received message that might help.
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Thank you for sending the example! However, I will just change the source addresses on another master module that is able to run IQAN Design 6 when we start prototyping.
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J1939 multipacket support was implemneted in IQAN 6.