ARK-3381 User Manual 12
2.3.3 COM2 ~ COM6 Connector
The ARK-3381 provides 6 RS-232/422/485 serial communication interface
ports for COM2, COM3, COM3 COM4, and COM5 by 6 D-sub 9-pin con-
nectors. The default setting of COM2, COM3, COM4 COM5 and COM6 is
RS-232. Please refer to section 3.3 ~ section 3.7 "Jumper Settings" and
Chapter 6 "Full Disassembly Procedure" for set up information
. The Pin
assignments of COM2 are different than COM3~COM6 , please check
the Table 2.5 and Table 2.6.
The RS-422/485 mode of COM2 can be supported via replacing the inter-
nal COM 2 cable by using the new cable (Part Number of 1700001967),
and adjusting the jumper inside of system. The extra cable (1700001967)
has been stored in the accessory box of the product carton.
Figure 2.7: COM2 connector
Note: NC represents “No Connection”
9RI
Table 2.5: COM2~COM6 Serial port pin assignments
RS-232 RS-422 RS-485
Pin Signal Name Signal Name Signal Name
1 DCD Tx- DATA-
2RxDTx+DATA+
3 TxD Rx+ NC
4DTRRx-NC
5 GND GND GND
6 DSR NC NC
7 RTS NC NC
8 CTS NC NC
9RINCNC
Table 2.4: COM1 Serial port pin assignments
Pin
Signal Name
15
9
6
324
78
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