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Figure 5-2: Operation mode Position of Dip-Switch
Step2: Enable the 120Ω terminator resistor
Ω
Please open the GW-7228 cover and use the JP3 to activate the 120
terminal resistor built in the module, as the Figure 5-3.
Figure 5-3: JP3 Jumper Position
GW-7228 J1939/Modbus RTU Slave Gateway User's Manual (Ver 1.3, Apr/2011) ------------- 37
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