Y301-600/800/G00 Serial I/O Modules — Digital Input Specification

Y301-600	Y301-800	Y301-G00

• Technical Manual

Contents

1. Overview
2. Ordering Information
3. Key Features
4. Technical Specifications
5. Interfaces and Indicators
6. Mechanical and Environmental
7. Installation and Wiring
8. Communication and Configuration
9. Notes

1. Overview

The Y301-600/800/G00 are digital input modules in the Y301 family, designed for discrete signal acquisition. The modules use opto-isolated inputs and communicate with PLCs, industrial PCs, or edge gateways over Modbus RTU/ASCII.

The three models differ mainly in input channel count. Power, communication, and mounting specifications remain aligned across the platform.

Model	DI	DO	AI	AO	Typical Application
Y301-600	6	0	0	0	Small equipment status acquisition
Y301-800	8	0	0	0	General cabinet switch monitoring
Y301-G00	16	0	0	0	High-density point collection

2. Ordering Information

2.1 Model Configuration

The I/O code follows DI / DO / AI / AO. These are channel counts on one module; the fourth position is omitted on models without AO.

Model	DI	DO	AI	AO
Y301-600	6	0	0	0
Y301-800	8	0	0	0
Y301-G00	16	0	0	0

For the full code and examples, see Model Naming.

2.2 Interface Options

Interface	Description
RS485	Supports multi-drop bus networks
RS232	Suitable for point-to-point connections

2.3 Ordering Table

Model	Interface Options	Description
Y301-600	RS485 / RS232	6-channel opto-isolated digital input
Y301-800	RS485 / RS232	8-channel opto-isolated digital input
Y301-G00	RS485 / RS232	16-channel opto-isolated digital input

2.4 Standard Package

Module, quick reference card, and warranty information. Optional accessories include a USB-to-RS485 converter, DIN-rail power supply, and shielded twisted-pair cable.

3. Key Features

1. Opto-isolated DI inputs for industrial discrete signal acquisition
2. Supports both dry contact and active voltage input (3.3-24 VDC)
3. 7-30 VDC supply range for common 12 V and 24 V systems
4. Supports both Modbus RTU and Modbus ASCII
5. Available with RS485 and RS232 serial interfaces
6. Supports device addressing from 0 to 255 and broadcast address 254
7. Supports baud rate settings of 2400, 4800, 9600, 19200, and 38400 bps
8. 35 mm DIN-rail mounting for standard cabinets

4. Technical Specifications

4.1 General Specifications

Parameter	Specification
Supply voltage	7-30 VDC
Data interface	RS485, RS232
Protocol	Modbus RTU, Modbus ASCII
Default serial format	9600, N, 8, 1
Optional baud rates	2400, 4800, 9600, 19200, 38400 bps
Address range	0-255 (broadcast address 254)
Power indicator	1 LED
Operating temperature	-40 to +85 °C
Mounting	35 mm DIN rail
Dimensions	120 x 70 x 35 mm
Weight	Approx. 60 g

4.2 Digital Input Specifications

Parameter	Y301-600	Y301-800	Y301-G00
DI channel count	6	8	16
Input type	Opto-isolated discrete input	Opto-isolated discrete input	Opto-isolated discrete input
Wiring mode	Dry contact / active input	Dry contact / active input	Dry contact / active input
Active input voltage	3.3-24 VDC	3.3-24 VDC	3.3-24 VDC
Read method	Function code 0x02 (discrete inputs)	Function code 0x02 (discrete inputs)	Function code 0x02 (discrete inputs)

5. Interfaces and Indicators

5.1 Interface Description

Interface Group	Description
Power terminal	VIN (power input positive), GND (power input negative)
Communication terminal	RS485: A/B; RS232: TX/RX/GND
DI terminal	DI1...DIn by model, used with the common terminal for input detection

5.2 LED Indicator

LED	Status	Meaning
POWER	Solid on	Power supply is normal

6. Mechanical and Environmental

Item	Value
Dimensions	120 x 70 x 35 mm
Mounting	35 mm DIN rail
Operating temperature	-40 to +85 °C
Storage recommendation	Dry, non-condensing environment

Recommended installation clearance: at least 15 mm above and below, and 10 mm on each side for wiring and heat dissipation.

7. Installation and Wiring

7.1 Power Wiring

1. Connect the positive DC supply to VIN.
2. Connect the negative DC supply to GND.
3. Verify polarity before power-on and use upstream fuse protection when possible.

7.2 DI Input Wiring

• Dry-contact input: connect the contact between the target DI channel and the common terminal.
• Active input: wire the 3.3-24 VDC signal to the target DI channel according to the terminal definition.

7.3 Communication Wiring

• RS485: use shielded twisted pair, wire A to A and B to B.
• RS232: wire according to the host serial definition and keep signal ground common.

8. Communication and Configuration

8.1 Typical Query Commands (RTU, Hex)

Model	Command	Description
Y301-600	FE 02 00 00 00 06 EC 07	Read 6 DI states
Y301-800	FE 02 00 00 00 08 6D C3	Read 8 DI states
Y301-G00	FE 02 00 00 00 10 6D C9	Read 16 DI states

8.2 Configuration Registers

Register (PLC notation)	Parameter	Description
4x1001	Communication baud rate	Write the baud-rate code
4x1003	Offset address	Device address = offset address + DIP address
4x1004	Operating mode	User data register
4x1005	Delay time	User data register

8.3 Baud-Rate Codes

Code	Baud rate
0	9600
1	2400
2	4800
3	9600
4	19200
5	38400

After changing the address or baud rate, restart the device and update the host serial settings accordingly.

9. Notes

1. When multiple devices share the same RS485 bus, each device must use a unique address.
2. Address 254 is a manufacturer-specific setup address that receives responses. Use it with one device on the bus; it is distinct from standard Modbus broadcast address 0.
3. Address 0 is not used for normal communication.
4. If reads fail, first check serial parameters, device address, and the RS485 A/B wiring.
5. If RS232 communication fails, verify the pinout and common-ground connection.

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• Manufacturer: Hunan YenGear Tech Co., Ltd.
• Address: Room 21014, Building 1, Fudi Xingguang Tiandi, Yingxin Road, Yuhua District, Changsha, Hunan, China
• Email: [email protected]
• Website: www.yengear.com