Overview

Both the Trio Q and Trio J radios have a multi-use serial port. Each radio features a 9 pin miniature D-Shell (DE-9) female connector that supports two individual serial port connections.

Typical use case for the J (unlicensed 900Mhz/2.4Ghz) or Q (licensed 400Mhz) radios will be Ethernet communications, yet for legacy applications, a Modbus Gateway (Modbus TCP to RTU protocol converter), Modbus Serial Device Server (Modbus RTU in TCP) may be configured on the serial port. A serial port may also be configured as a TUI (Text User Interface) for configuration/diagnostics. The TUI diagnostics is useful on systems suffering from high error rates as it provides a basic high speed interface.

Serial port configuration is accomplished with a web browser and the default IP address of both radios is 192.168.2.15. Details of how to configure each radio’s serial port for your application can be found in the Q or J radio documentation installed with TVew+.

Serial Port A & B (J series Radio)

Data Port A uses pins 2 & 3 with pin 5 as the common ground*
Data Port B uses pins4 & 6 with pin 5 as the common ground*

	RS-232 Mode
Pin	Name	Input / Output
1	Not Used	---
2	Port A RxD	Output
3	Port A TxD	Input
4	Port B TxD (Diags)	Input
5	GND	---
6	Port B RxD (Diags)	Output
7	Not Used	---
8	Not Used	---
9	RSSI / General Purpose Pin	Output

* There is no option for RS-485 connections with the J Series radio.

COM Port 1 & 2  (Q series Radio)

COM 1 uses pins 2,3,7 & 9 with pin 5 as the common ground
COM 2 uses pins 4 & 6 with pin 5 as the common ground

	RS-232 Mode		RS-485 Mode
Pin	Name	Input / Output	Name	Input / Ouput
1	COM 1 DCD	Output	Not Used	---
2	COM 1 RxD	Output	B / Z (Inverting)	Input / Output
3	COM 1 TxD	Input	A / Y (Non-Inverting)	Input / Output
4	COM 2 TxD	Input	Not Used	---
5	GND	---	Not Used	---
6	COM 2 RxD	Output	Not Used	---
7	COM 1 RTS	Input	Not Used	---
8	COM 1 CTS	Output	Not Used	---
9	RSSI	Output	RSSI	Output

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