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→Test RS-485 communication with two IGEP0020 boards
<pre> J940 J940
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| 1 |---------- GND --------------| 1 || 2 |-X X-| 2 || 3 |-X X-| 3 || 4 |---------- A --------------| 4 || 5 |---------- B --------------| 5 |
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</pre>
