Advantech ARK-3381 - Figure 3.4:JP13;JP14;JP15 Jumper Pin Layout; COM7 RS-232 Jumper Setting; Table 3.6:COM7 (DTR#5;RTS#5) Jumper Selection; Table 3.7:COM7 (DCD#5;DSR#5;CTS#5;RI#5) Jumper Selection

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Figure 3.4: JP13/JP14/JP15 Jumper pin layout
3.8 COM7 RS-232 Jumper Setting
(JP16/JP17 Located on internal I/O board)
The COM7 port connector located on rear face plate of ARK-3381 unit
which can be configured and set up by the Jumper selections of JP16 and
JP17 located on internal I/O board of ARK-3381 unit. Please refer to
Table 3.6 to select the settings. The default setting is “DTR#5”.
(*): means default setting of the jumper/function
(*): means default setting of the jumper/function
Table 3.6: COM7 (DTR#5/RTS#5) Jumper Selection
Function JP16
DTR#5 * 1-2 (closed)
RTS#5 2-3 (closed)
Table 3.7: COM7 (DCD#5/DSR#5/CTS#5/RI#5) Jumper Selection
Function JP17
DCD#5 * 1-2
DSR#5 3-4
CTS#5 5-6
RI#5 7-8