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UTC-315 POS Series User Manual
Appendix A
I/O Pin
A
ssignments
UART RS485 Auto Flow Control
COM2 supports RS485 auto flow control function for all UART.
Enabling the RS485 auto control function automatically drives the RTS# pin logic to
high or low for flow control.
To enable the RS485 auto flow control function, the parity and stop bit configuration
must adhere to one of the following three options:
(1) 8 data bits + 1 parity bit + 1stop bit
(2) 8 data bits + 1 parity bit + 2 stop bits
(3) 8 data bits + 2 stop bits
Table A.11: CN13: COM2
Part Number
1655000197
Footprint
WF_5x2P_79_BOX_D_P1R
Description
1655_WF_5x2P_79_BOX_D_P1R_0.Normal
Pin
Pin Name
1
422/485 TX-
2
422/485 TX+
3
422 RX+
4
422 RX-
5
GND
6
DSR#
7
RTS#
8
CTS#
9
RI#
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Страница 37: ...Appendix A A I O Pin Assignments...