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Serial Port 1/2 Pin9 Signal Select (Jri1/2); Serial Port 1/2 - Rs232/422/485 Mode Select (Jcom_Sel1/2) - Avalue Technology ECM-APL2-A User Manual

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2.3.3

Serial port 1/2 pin9 signal select (JRI1/2)

JRI1
* Default
Serial port 1/2 – RS232/422/485 mode select (JCOM_SEL1/2)
2.3.4
JCOM_SEL1
* Default
JRI2
JCOM_SEL2
User's Manual
Ring*
+5V
RS-232*
RS422/485
ECM-APL2 User's Manual 19
+12V

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