User Manual

10-Pin Description 8-Pin
1 ------
2 DSR 1
3 ------ 2
4 GND 3
5 TxD 4
6 RxD 5
7 GND 6
8 ------ 7
9 DTR 8
10 ------
Wiring the Digital Inputs
AWK-3121 has two sets of digital input—DI1 and DI2. Each DI comprises
two contacts of the 10-pin terminal block connector on AWK-3121's top
panel. You can refer to the section Wiring the Redundant Power Inputs for
detailed instructions on how to connect the wires to the terminal block
connector, and how to attach the terminal block connector to the terminal
block receptor.
Communication Connections
10/100BaseT(X) Ethernet Port Connection
The 10/100BaseT(X) ports located on AWK-3121’s front panel are used to
connect to Ethernet-enabled devices.
Below we show pinouts for both MDI (NIC-type) ports and MDI-X
(HUB/Switch-type) ports.
RJ45 (8-pin, MDI) Port Pinouts RJ45 (8-pin, MDI-X) Port Pinouts
Pin Signal
Pin Signal
1 Tx+
1 8
2 Tx-
3 Rx+
6 Rx-
1 Rx+
1 8
2 Rx-
3 Tx+
6 Tx-
RS-232 Connection
AWK-3121 has one RS-232 (8-pin RJ45) console port, located on the side
panel. Use either an RJ45-to-DB9 or RJ45-to-DB25 cable to connect MOXA
AWK-3121’s console port to your PC’s COM port. You may then use a
console terminal program to access AWK-3121 for console c onfiguration.
Console Pinouts for 10-pin or 8-pin RJ45
1 8
NOTE
1. The pin numbers for male DB9 and DB25 connectors, and hole
numbers for female DB9 and DB25 connectors are labeled on the
connector. However, the numbers are typically quite small, so you
may need to use a magnifying glass to see the numbers clearly.
2. The pin numbers for both 8-pin and 10-pin RJ45 connectors
(and ports) are typically not labeled on the connector (or port).
Refer to the Pinout diagram below to see how RJ45 pins are
numbered.
- 8 -