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The SBC-551/552 offers two serial ports. One RS-232 COM1 (CN10)
and one RS-232/422/485 COM2 (CN7). The mode of CN7 can be
selected via JP10.
The following charts show the available options:
1
3
5
* default
22
SBC-551/552 User Manual
RS-232*
2
4
6
1-2 (Enable)
1 2 3
RS-422
1
2
3
4
5
6
RS-485
1
2
3
4
5
6
2-3 (Disable)
1 2 3
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