ePAQ-9410 / ePAQ-
9420 User’s Guide UG-1071
Copyright © 2017 QEI
Communications Ports
19
Connector Pinout :
Connections for J7C and J7D are identical to those listed in the table above for J7A.
Note 1: J7A-7 and J7A-8 are power for factory use only (I/O expansion), and should NOT be used
for general purposes. Output current is limited.
6.6 Ports 12/13 (J8B/J8A): RS-232 (Bit/Byte) Ports
6.6.1 Introduction
The ePAQ-94XX includes two RS-232 ports, via RJ45 connectors. The ports can be
byte or bit oriented. Each port includes RTS and CTS handshaking lines, as well as clock
control lines TXCLK and RXCLK for bit oriented synchronous protocols. Asynchronous port
speeds are generally 1200 to 115.2kbps, and other speeds dependent on bit oriented
protocols. When the RS-232 bit ports are configured for bit oriented protocol, the input and
output bits are manually controlled by software. Bit protocols supported are per factory order.
RJ45 PIN #
Signal Type
Signal Name
J7A-1
I/O Power
GND
J7A-2
I/O Power
GND
J7A-3
RS-422
TX+
J7A-4
RS-422
RX+
J7A-5
RS-422
RX-
J7A-6
RS-422
TX-
J7A-7
I/O Power
+24Vdc OUT (Note 1)
J7A-8
I/O Power
+24Vdc OUT (Note 1)
