Introduction To Serial Port For Lp-8X2X - ICP DAS USA LP-22 Series User Manual

2.7.3. Introduction to Serial port for LP-8x2x

Figure 2.7.3-1 illustrates the ports contained on the LP-8821 and Figure 2.7.3-2 illustrates those on
the LP-8121. The information is organized as follows:

ttyO4─ Internal communication with the I-87KW modules in slots

ttyO5 ─ RS-232 (RxD, TxD and GND); Non-isolation; Console

ttyS0 ─ RS-485 (D2+, D2-; self-tuner ASIC inside)

ttyS1 ─ RS-232/RS-485
(RXD, TXD, CTS, RTS and GND for RS-232, Data+ and Data- for RS-485)

ttyS34 ─ RS-232 (RXD, TXD, CTS, RTS, DSR, DTR, CD, RI and GND)
Device name
ttyO4
ttyO5 (RS-232/console)
ttyS0 (RS-485)
ttyS1 (RS-232/485)
ttyS34 (RS-232)
AM335X-PAC Series User Manual
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Definition in LP-8x21 SDK
COM3 (LP-8421/8821 only)
COM36 (LP-8421/8821 only)
Figure 2.7.3-1. Serial port mapping on the LP-8821
COM1
None
COM2
version 2.0.1
Default baudrate
115200
115200
9600
9600
9600
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