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User’s Manual
22 ECB-870 User’s Manual
3.9.1 COM2 RS-232/422/485 Select (J1, J2, JCSEL)
The ECB-870 COM2 serial port can be selected as RS-232, RS-422, or RS-485 by setting
J1, J2, & JCSEL.
COM2 RS-232/422/485 Select (J1, J2, JCSEL)
RS-232* RS-422 RS-485
* default
1
2
3
10
11
12
J2
1 3 5
2 4 6
1 3 5
2 4 6
1 3 5
2 4 6
1 3
2 4
1 3
2 4
1 3
2 4
J1
JCSEL
1
2
3
10
11
12
1
2
3
10
11
12