BDM-610000075
Rev B
Chapter 3: Connecting the cpuModule
37
Table 23
COM A (RS-422/485) and COM B (RS-232)
Pin
Signal
Function
In/Out
DB-9
1
DCD1
COM A - Data Carrier Detect
in
1
2
RXD2
COM B - Receive Data
in
6
3
RXD1-
COM A - Receive Data (–)
in
2
4
TXD1+
COM A - Transmit Data (+)
out
7
5
TXD1-
COM A - Transmit Data (–)
out
3
6
RXD1+
COM A - Receive Data (+)
in
8
7
TXD2
COM B - Transmit Data
out
4
8
RI1
COM A - Ring Indicate
in
9
9,10
GND
Signal Ground
—
5
Table 24
COM A (RS-422/485) and COM B (RS-422/485)
Pin
Signal
Function
In/Out
DB-9
1
RXD2+
COM B - Receive Data (+)
in
1
2
RXD2-
COM B - Receive Data (–)
in
6
3
RXD1-
COM A - Receive Data (–)
in
2
4
TXD1+
COM A - Transmit Data (+)
out
7
5
TXD1-
COM A - Transmit Data (–)
out
3
6
RXD1+
COM A - Receive Data (+)
in
8
7
TXD2-
COM B - Transmit Data (–)
out
4
8
TXD2+
COM B - Transmit Data (+)
out
9
9,10
GND
Signal Ground
—
5
Содержание BDM-610000075
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