Moxa Technologies IA3341, Руководство пользователя по оборудованию

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IA3341 Hardware User's Manual Hardware Connection Description
3-4
Connecting to a Serial Device
Use properly wired serial cables to connect the IA3341 to serial devices. The serial ports of the IA3341 use male
DB9 connectors. The ports can be configured by software for RS-232, RS-422, or 2-wire RS-485. The precise
pin assignments are shown in the following table:
Male DB9 Port RS-232/422/485 Pinouts
1 2 3 4 5
6 7 8 9
Pin RS-232 RS-422 RS-485 (4-wire) RS-485 (2-wire)
1 DCD TxDA(-) TxDA(-) –
2 RxD TxDB(+) TxDB(+) –
3 TxD RxDB(+) RxDB(+) DataB(+)
4 DTR RxDA(-) RxDA(-) DataA(-)
5 GND GND GND GND
6 DSR – – –
7 RTS – – –
8 CTS – – –
Connecting to the DI/DO
The IA3341 has an 4-ch digital input and 4-ch digital output. The digital input channels and digital output
channels are located on the front side of the unit in a terminal block. The pinouts for the I/O are shown in the
figure.
Digital Input and Output Channel
(10-pin Terminal Block)
DI x 4
DO x 4
Additional wiring instructions are given below.
Digital Input Wiring
Dry Contact
Wet Contact
Note: If you are using wet contacts, you must connect “COM” to power.