Device
and operation
CPC307
C P C 3 0 7 U s e r M a n u a l
49
© 2 0 2 2 F a s t w e l v . 0 0 6
Attention!
A +5 V power supply circuit connects homonymous pins of XS1 (PCI-104), XS2 (PC-
104), and XP22 (additional power connector) connectors and is intended for
supplying the module with power. The +5 V power supply outputs are protected by a
0.5 A fuse. For connected external modules, the recommended current consumption value is not
more than 0.4 A. It is not recommended to connect power from interface connectors to more than
one external module in order not to overload the power supply circuits of the CPU module
Table 4.15. Pin assignment of the XP10 connector for COM1 port
Pin
Signal
Pin
Signal
1
DCD
(RS-232)
2
DSR
(RS-232)
TX+/RTXD+
(RS-422/485)
TX-/RTXD-
(RS-422/485)
3
RXD#
4
RTS
5
TXD#
6
CTS
7
DTR
(RS-232)
8
RI
(RS-232)
RX+
(RS-422/485)
RX-
(RS-422/485)
9
GND
10
+5 В
Table 4.16. Pin assignment of the XP16 connector for COM2 port
Pin
Signal
Pin
Signal
1
DCD
(RS-232)
2
DSR
(RS-232)
TX+/RTXD+
(RS-422/485)
TX-/RTXD-
(RS-422/485)
3
RXD#
4
RTS
5
TXD#
6
CTS
7
DTR
(RS-232)
8
RI
(RS-232)
RX+
(RS-422/485)
RX-
(RS-422/485)
9
GND
10
+5 В
Figure 4.18. Numbering pins of the XP10 and XP16 connectors
Figure 4.19 shows the connection of modules via RS-422 interface.