MA00101E00 V_1.3
5
N.PIN
Descriptions
1
PROG. -> On=Converter in program mode Off= terminal mode
2
Term+ ON = Term+ and PullUp on the rx+ line (only in the first and the last
receivers)
3
ON = RS485 2wire OFF= RS422 4wire
4
Term- ON = Term- and PullDw on the rx- line (only in the first and the last
receivers)
Open/Close both dip2 and dip4 together for bus termination.
Be carefull do not leave the floating potential GNDExt but fix it on the ground in just only one point
.
6 SOLDER SWITCH
Solder switch monitor
options
Default = RS232
Monitor options
K1
1-2 Closed / 2-3Open
1-2 Open / 2-3 Closed
K3
Closed
Solder switch
Descriptions
K2
Close only for compatibility with old OPD
K7
Power supplies from USB when use RS232 to RS422
without USB initialization/use
7 THE CONCEPT OF THE SISTEM
7.1
WHEN A TX DATA AS TRANSMITTED BOTH THE OTHERS PORTS RECEIVE
THAT DATA
These three examples show the relationship between the sender and who receivers.
If we don't use the USB connector the converter need an external 5V on USB connector or from the pin1-6 of
CN2.It is possible to use a normal USB power supplies on the USB cable but the internal K7 solder switch
must be close
.
