Near Intersection of I-35 & I-90 Southern Mn. | I would say no.
Generally a system should have two 120 ohm resistors for termination involved. Ideally there should be one on each "end" of the CAN cables leading from the display to the chain of modules. This drawing only seems to show one but the other is built into the display cable near the display so there is one there and you should have one near the other "end"
Ag Leader has terminator plugs as shown in the drawing which contain a 120 ohm resistor between the Green and Yellow wires. The Green and Yellow wires are the CAN High and CAN Low wires used for communication between the various parts of the system. Ag Leader also has dust caps which contain no wires and are used only to protect any extra branches from damage or debris.
A common use for a dust cap could be if your CAN extensions are not long enough and you need to put two together to get enough length. Ag Leader does not have a coupler to join two cables together so you need to use a "Y". Since only two of the three branches are needed, the other remains open and should be capped with a dust cap NOT a terminator. The terminator is needed but it should be "further down the line" as close as possible to the most distant module.
The purpose of the terminators is help with potential interference on the CAN line. The CAN signals travel back and forth between the modules and the display. The purpose of the two terminators is to help prevent "reflections" back on the signal wires.
Again there should be exactly two in each system with one on each end. Since those two resistors are in parallel, the net effect is 60 ohms of resistance. I have "gotten by" in a bench setup without using the second resistor but this isn't recommended.
I understand your desire to eliminate one of the "Y"s and not use the terminator but I think it best to follow the drawing.
Edited by tedbear 3/23/2025 11:08
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Direct command
