1 2 1 2 on – Acrosser AR-B1565 User Manual
Page 25
AR-B1565/1565A User’s Guide
24
17
–DTR2F 18
–RI2F
19
VCOM2 20
GND
21
–DCD3F 22
–DSR3F
23
RXD3F 24
–RTS3F
25
TXD3F 26
–CTS3F
27
–DTR3F 28
–RI3F
29
VCOM3 30
GND
31
–DCD4F 32
–DSR4F
33
RXD4F 34
–RTS4F
35
TXD4F 36
–CTS4F
37
–DTR4F 38
–RI4F
39
VCOM4 40
GND
(1) RS-232/RS-485 Select for COM3 (J6 & J8)
The J6&J8 jumper is used to choose between the use of the on-board RS-232 or RS-485 for the COM3.
J6
1
3
5
1
2
3
J8
RS-232
Factory Preset
J6
1
3
5
1
2
3
J8
RS-485
Figure 3-10 J6 & J8: RS-232/RS-485 Select for COM3
(2) RS-485 Terminator Select (J7)
When there is only one line the setting should be left off, but if you are using multiple blocks on a single line
this should be set to “ON” in order to properly terminate the connection for better transmission of data
OFF
Factory Preset
1
2
1
2
ON
Figure 0-5 J7: RS-485 Terminator Select
(3) RS-485 Header (J8)
1 2 3
1 N485+
2 N485-
3 GND