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Difference between revisions of "Serial port pinout"

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[[RIO]]: Multidrop (RS485) cabling:
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<pre>
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AlphaCom              RIO #1                  RIO #n         
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Serial 1            15 pin DSUB            15 pin DSUB
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  RJ45
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  1 -----------------+-- 9 --+----------------+-- 9
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                      |      |                |
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                      --- 11---                --- 11
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  7 -----------------+-- 2 --+----------------+-- 2
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                      |      |                |
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                      --- 4 ---                --- 4
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</pre>
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[[Category:AlphaCom E System]]
 
[[Category:AlphaCom E System]]

Revision as of 15:55, 28 February 2008

In the AlphaCom E20 and E26 exchanges the two serial ports are available on RJ45 connectors. In the AlphaCom E7 serial port 0 is 9 pin DSUB, and serial port 1 is on a RJ45 connector.

The serial port 0 is RS232 only, the serial port 1 can be RS232, RS422 or RS485.

The pinout on the RJ45 connector is as follows:

RJ45 pinout
RS232 3 = TX<br\>6 = RX<br\> 4&5 = GND
RS422 1 = RX-<br\>2 = RX+<br\>7 = TX-<br\>8 = TX+
RS485 1/7 = Data - <br\> 2/8 = Data+

<br\><br\>

Adaptor cable from RJ-45 to 9-pin Female D-SUB:

RJ45 - AlphaCom E 9 p Female DSUB
3 2
5 5
6 3


Cabling between RIO unit and AlphaCom E using multidrop RS485:

RJ45 - AlphaCom E RIO 15 p DSUB
1 (RX-) 9 (TX+)
2 (RX+) 2 (TX-)
7 (TX-) 11 (RX+)
8 (TX+) 4 (RX-)

RIO: Multidrop (RS485) cabling:

 AlphaCom               RIO #1                  RIO #n           
 Serial 1             15 pin DSUB             15 pin DSUB
  RJ45

   1 -----------------+-- 9 --+----------------+-- 9
                      |       |                |
                      --- 11---                --- 11

   7 -----------------+-- 2 --+----------------+-- 2
                      |       |                |
                      --- 4 ---                --- 4