Proface APL3000B - Node Box PC - Manual (Page 37)

PS-3000B Series Hardware Manual
2-14
Switch
Number
Description ON OFF RS-232C RS-422 RS-485
1
Changes COM2’s
communication
method
RS-232C RS-422 / RS-485 ON OFF
*1
*1 Be sure to keep the settings, “OFF” for RS-422 or RS-485.
OFF
*1
2
Changes COM2’s
communication
method
RS-422 / RS-485 RS-232C OFF ON ON
3
Changes COM2’s
communication
method
RS-422 / RS-485 RS-232C OFF ON ON
4
Changes TX data’s
output mode
TX data output is
controlled via the
RTS signal.
TX data output is
NOT controlled
via the RTS
signal. (normally
output)
OFF ON/OFF ON/OFF
*3
5
Switches the TX
termination
resistance ON/OFF
Inserts
termination
resistance of
220
Ω between
TXA and TXB.
No termination OFF ON ON/OFF
*2
*2 If you use the termination resistance, base your settings on the connection specifications.
6
Switches the RX
termination
resistance ON/OFF
Inserts
termination
resistance of
220
Ω between
RXA and RXB.
No termination OFF ON ON/OFF
*2
7
Switches the
shorting of TXA
and RXA ON/OFF Shorts TXA and
RXA.
(RS-485 mode)
No shorting
(RS-422 mode)
OFF OFF ON
8
Switches the
shorting of TXB
and RXB ON/OFF Shorts TXB and
RXB.
(RS-485 mode)
No shorting
(RS-422 mode)
OFF OFF ON
9 RTS Automatic
control mode
(enabled only when
RS-485 mode) The data is
automatically
controlled via the
RTS signal. The data is not
automatically
controlled via the
RTS signal. OFF OFF ON/OFF
*3
*3 To control TX output driver via RTS automatically, set ON. Be sure to set SW No.4 OFF.
To control TX output driver via RTS signal, set OFF. Be sure to set SW No.4 ON.
10 OFF OFF ON/OFF
*3
Table2) Serial Mode Select Switches