SmartGen DOUT16B-2 Digital Output Module User Manual

Date	Version	Note
2020-10-16	1.0	Original Release
2020-12-15	1.1	Replaced the panel drawing.
2022-08-22	1.2	Update company logo and manual format.

1. Overview

The DOUT16B-2 Digital Output Module is an expansion module featuring 16 auxiliary digital output channels. The status of the expansion module is transmitted to the DOUT16B-2 by the main control board via RS485 communication.

2. Technical Parameters

Item	Contents
Working Voltage	DC8.0V~DC35.0V continuous power supply
Power Consumption	<6W
Aux. relay output port 1-16	10A relay for output port 1~4, 7~14. 16A relay for output port 5~6, 15~16.
Case Dimension	161.6mm x 89.7mm x 60.7mm
Installation Way	35mm guide-rail installation or screw installation
Working Temperature	(-25~+70)°C
Working Humidity	(20~93)%RH
Storage Temperature	(-30~+80)°C
Weight	0.4kg

3. Module Address

This module features a 4-bit in-line DIP switch providing 16 coding statuses, corresponding to module addresses from 100 to 115. When a switch is turned ON, its status is 1. The module address is calculated using the formula: Module Address = 1A + 2B + 4C + 8D + 100. For example, if ABCD is 0000, the module address is 100. If ABCD is 1000, the address is 101. If ABCD is 0100, the address is 102. If ABCD is 1111, the address is 115.

Table 3 Module Addresses

A	B	C	D	Module Addresses
0	0	0	0	100
1	0	0	0	101
0	1	0	0	102
1	1	0	0	103
0	0	1	0	104
1	0	1	0	105
0	1	1	0	106
1	1	1	0	107
0	0	0	1	108
1	0	0	1	109
0	1	0	1	110
1	1	0	1	111
0	0	1	1	112
1	0	1	1	113
0	1	1	1	114
1	1	1	1	115

4. Terminal Diagram

The DOUT16B-2 module features a panel with various terminals for power, communication, and output connections. The front panel includes DIP switches (A, B, C, D) for module address configuration, a POWER indicator, and RS485 communication indicators.

The rear panel provides screw terminals for connections. The following table details each terminal:

Table 1 Description of Rear Panel Terminal Connection

No.	Name	Description	Cable Size	Remarks
1.	B-	DC power supply negative input	1.5mm²	DC power supply negative input.
2.	B+	DC power supply positive input	1.5mm²	DC power supply positive input.
3.	1200			Twisted shielded line is used. If the terminal needs to match 120Ω resistance, terminal 3 and 4 need to be short circuited.
4.	RS485B (-)	RS485 communication port	0.5 mm²
5.	RS485A (+)	RS485 communication port	0.5 mm²
6.	Aux. output port 1	Volt free relay N/O output	1.5 mm²	Capacity 250VAC/10A.
7.	Aux. output port 1 (Common)		1.5 mm²
8.	Aux. output port 2	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
9.	Aux. output port 2 (Common)		1.5mm²
10.	Aux. output port 3	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
11.	Aux. output port 3 (Common)		1.5mm²
12.	Aux. output port 4	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
13.	Aux. output port 4 (Common)		1.5mm²
14.	Aux. output port 5	N/C	2.5mm²	Capacity 250VAC/16A.
15.	Aux. output port 5	N/O	2.5mm²	Capacity 250VAC/16A.
16.	Aux. output port 5	Common	2.5mm²
17.	Aux. output port 6	N/C	2.5mm²	Capacity 250VAC/16A.
18.	Aux. output port 6	N/O	2.5mm²	Capacity 250VAC/16A.
19.	Aux. output port 6	Common	2.5mm²
20.	Aux. output port 7	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
21.	Aux. output port 7 (Common)		1.5mm²
22.	Aux. output port 8	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
23.	Aux. output port 8 (Common)		1.5mm²
24.	Aux. output port 9	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
25.	Aux. output port 9 (Common)		1.5mm²
26.	Aux. output port 10	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
27.	Aux. output port 10 (Common)		1.5mm²
28.	Aux. output port 11	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
29.	Aux. output port 11 (Common)		1.5mm²
30.	Aux. output port 12	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
31.	Aux. output port 12 (Common)		1.5mm²
32.	Aux. output port 13	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
33.	Aux. output port 13 (Common)		1.5mm²
34.	Aux. output port 14	Volt free relay N/O output	1.5mm²	Capacity 250VAC/10A.
35.	Aux. output port 14 (Common)		1.5mm²
36.	Aux. output port 15	Common	2.5mm²	Capacity 250VAC/16A.
37.	Aux. output port 15	N/O	2.5mm²	Capacity 250VAC/16A.
38.	Aux. output port 15	N/C	2.5mm²
39.	Aux. output port 16	Common	2.5mm²	Capacity 250VAC/16A.
40.	Aux. output port 16	N/O	2.5mm²	Capacity 250VAC/16A.
41.	Aux. output port 16	N/C	2.5mm²
POWER	Power indicator			Light when power supply is normal, distinguish when abnormal.
Module Address	Module address			Select module address by DIP switch.

5. Communication Configuration and Modbus Communication Protocol

5.1. RS485 Communication Port

The DOUT16B-2 is an expansion output module with an RS485 communication port, following the Modbus-RTU communication protocol.

Communication Parameters

Module Address: 100 (range 100-115)
Baud Rate: 9600bps
Data Bit: 8-bit
Parity Bit: None
Stop Bit: 2-bit

5.2. Information Frame Format Example

5.2.1. Function Code 01H

Slave address is 64H (decimal 100), read 10H (decimal 16) status of starting address 64H (decimal 100).

Table 2 Function Code 01H Master Request Example

Request	Bytes	Example (Hex)
Slave address	1	64 Send to slave 100
Function code	1	01 Read status
Starting address	2	00 Starting address is 100 64
Count number	2	00 Read 16 status 10
CRC code	2	75 CRC code which calculated by master EC

Table 3 Function Code 01H Slave Response Example

Response	Bytes	Example (Hex)
Slave address	1	64 Respond slave address 100
Function code	1	01 Read status
Read count	1	02 16 status (total 2 bytes)
Data 1	1	01 The content of address 07-00
Data 2	1	00 The content of address 0F-08
CRC code	2	F4 CRC code which calculated by slave. 64

The value of status 07-00 is indicated as 01H in Hex, and 00000001 in binary. Status 07 is the high-order byte, 00 is the low-order byte. The state of status 07-00 is OFF-OFF-OFF-OFF-OFF-OFF-OFF-ON.

5.2.2. Function Code 03H

Slave address is 64H (decimal 100), starting address is 1 data of 64H (decimal 100) (2 bytes per data).

Table 4 Example Data Address

Address	Data (Hex)
64H	1

Table 5 Function Code 03H Master Request Example

Request	Bytes	Example (Hex)
Slave address	1	64 Send to the slave 64H
Function code	1	03 Read point register
Starting address	2	00 Starting address is 64H 64
Count Number	2	00 Read 1 data (total 2 bytes) 01
CRC code	2	CC CRC code which calculated by master. 20

Table 6 Function Code 03H Slave Response Example

Response	Bytes	Example (Hex)
Slave address	1	64 Respond to the slave 64H
Function code	1	03 Read point register
Read count	1	02 1 data (total 2 bytes)
Data 1	2	00 The content of address 0064H 01
CRC code	2	35 CRC code which calculated by slave. 8C

5.2.3. Function Code 05H

Slave address is 64H (decimal 100), starting address is one status of 64H (decimal 100). Set 64H unit as 1.

Table 7 Example Status Data Address

Address	Data(Hex)
64H	1

Illustration: Hex value FF00 forced status is 1. 0000H is forced as 0. Other values are illegal and do not affect the status.

Table 8 Function Code 05H Master Request Example

Request	Bytes	Example (Hex)
Slave address	1	64 Send to the slave 64H
Function code	1	05 Forced status
Starting address	2	00 Starting address is 0064H 64
Data	2	FF Set status as 1 00
CRC code	2	C4 CRC code which calculated by master. 10

Table 9 Function Code 05H Slave Response Example

Response	Bytes	Example (Hex)
Slave address	1	64 Send to the slave 64H
Function code	1	05 Forced status
Starting address	2	00 Starting address is 0064H 64
Data	2	FF Set status as 1 00
CRC code	2	C4 CRC code which calculated by master. 10

5.2.4. Function Code 06H

Slave address is 64H (decimal 100), set one point content of starting address 64H (decimal 100) as 0001H.

Table 10 Function Code 06H Master Request Example

Request	Bytes	Example (Hex)
Slave address	1	64 Send to the slave 64H
Function code	1	06 Write single register
Starting address	2	00 Starting address is 0064H 64
Data	2	00 Set 1 point data (total 2 bytes) 01
CRC code	2	00 CRC code which calculated by master. 20

Table 11 Function Code 06H Slave Response Example

Response	Bytes	Example (Hex)
Slave address	1	64 Send to the slave 64H
Function code	1	06 Write single register
Starting address	2	00 Starting address is 0064H 64
Data	2	00 Set 1 point data (total 2 bytes) 01
CRC code	2	00 CRC code which calculated by master. 20

5.3. Corresponding Address to Function Code

Table 12 Function Code 01H

Address	Item	Description
100	Output Port 1 Status	1 for active
101	Output Port 2 Status	1 for active
102	Output Port 3 Status	1 for active
103	Output Port 4 Status	1 for active
104	Output Port 5 Status	1 for active
105	Output Port 6 Status	1 for active
106	Output Port 7 Status	1 for active
107	Output Port 8 Status	1 for active
108	Output Port 9 Status	1 for active
109	Output Port 10 Status	1 for active
110	Output Port 11 Status	1 for active
111	Output Port 12 Status	1 for active
112	Output Port 13 Status	1 for active
113	Output Port 14 Status	1 for active
114	Output Port 15 Status	1 for active
115	Output Port 16 Status	1 for active

Table 13 Function Code 05H

Address	Item	Description
100	Output Port 1 Status	1 for active
101	Output Port 2 Status	1 for active
102	Output Port 3 Status	1 for active
103	Output Port 4 Status	1 for active
104	Output Port 5 Status	1 for active
105	Output Port 6 Status	1 for active
106	Output Port 7 Status	1 for active
107	Output Port 8 Status	1 for active
108	Output Port 9 Status	1 for active
109	Output Port 10 Status	1 for active
110	Output Port 11 Status	1 for active
111	Output Port 12 Status	1 for active
112	Output Port 13 Status	1 for active
113	Output Port 14 Status	1 for active
114	Output Port 15 Status	1 for active
115	Output Port 16 Status	1 for active

Table 14 Function Code 03H, 06H

Address	Item	Description	Bytes
100	Output Port 1-16 Status	Unsigned	2Byte

6. Installation

The module dimensions are as follows:

Unit: mm

Case Dimensions:

Width: 161.6 mm
Height: 61 mm
Depth: 93 mm
Mounting Hole Diameter: 4.2 mm

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