BLIIoT DAM Series User manual

Remote I/O Module
DAM series
User Manual
Version：V1.0
Date：2022-11-23
Shenzhen Beilai Technology Co.,Ltd
Website：https://www.bliiot.com

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Remote I/O Module DAMxxx
Preface
Thanks for choosing BLIIoT Remote I/O Module. These operating instructions contain
all the information you need for operation of a device in the DAM family.
Copyright
This user manual is owned by Shenzhen Beilai Technology Co., Ltd. No one is
authorized to copy, distribute or forward any part of this document without written
approval of Shenzhen Beilai Technology. Any violation will be subject to legal liability.
Disclaimer
This document is designed for assisting user to better understand the device. As the
described device is under continuous improvement, this manual may be updated or
revised from time to time without prior notice. Please follow the instructions in the
manual. Any damages caused by wrong operation will be beyond warranty.
Revision History
Update Date
Version
Description
Owner
November 23, 2022
V1.0
First Edition
LKY

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Content
1 Product Introduction ...................................................................................................... 4
1.1 Overview .................................................................................................................. 4
1.2 Model List .................................................................................................................4
1.3 Features ................................................................................................................... 5
1.4 Specification ............................................................................................................ 5
1.5 Packing List ............................................................................................................. 7
2 Installation ....................................................................................................................... 8
2.1 Interface ................................................................................................................... 8
2.2 Wiring ......................................................................................................................10
2.3 Testing .................................................................................................................... 11
2.4 Setting .................................................................................................................... 12
3 Modbus Register.......................................................................................................... 13
3.1 Digital I/O Modbus Register List .........................................................................13
3.2 Analog/PT100 Input Register List ...................................................................... 15
3.3 Thermocouple Input Modbus Register List .......................................................19
4 Warranty ........................................................................................................................ 20
5 Technical Support........................................................................................................ 20

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1 Product Introduction
1.1 Overview
DAM series I/O module is data acquisition module which features digital input, relay
output, analog input, thermal resistance PT100/PT1000 input, and thermocouple
input.
DAM series I/O module support MODBUS RTU protocol, communicate through
RS-485 serial port, it is widely used in various industrial automation measurement and
control systems.
1.2 Model List
Model
I/O
Type
Digital Input
Digital Output
Analog Input
RTD
TC
DAM102
2
DAM104
2
DAM106
2
2
DAM108
4
DAM110
4
DAM112
4
4
DAM114
2
DAM116
4
DAM118
2
DAM120
4
DAM122
2
2
DAM124
4
4
DAM128
8
Digital Input: Wet Contact/Dry Contact, compatible with pulse counting, TTL
Digital Output: Relay (Max 5A/250VAC), Normal Open, compatible with pulse output
Analog Input: Default is 0/4-20mA 16Bits, other options: 0-5V, 0-10V
RTD: Default is PT100 2/3 wire, PT1000 is an option.
TC: Support B, E, J, K, N, R, S, T type Thermocouple

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1.3 Features
Support Modbus RTU protocol
RS485 serial port with ESD protection
DC9～36V power supply with anti-reverse connection protection
Industrial grade chip, reliable performance with in-built watchdog
LED for status indication makes it easy to program in filed
Support configure parameters, load/export profiles via PC
Wall mount or 35mm standard DIN rail installation
Digital Input: Wet Contact/Dry Contact, compatible with pulse counting, TTL
Digital Output: Relay (5A/250VAC), compatible with pulse output
Analog Input: 4~20mA/0-20mA/0~5V/0~10V, 16-bit AD acquisition and
processing, the maximum and minimum values of the analog input can be
configured, and the actual value can be converted automatically
Thermal Resistance: The accuracy of the PT100 input can be adjusted online
through the configuration software
Thermocouple: B, E, J, K, N, R, S, T type Thermocouple, Thermocouple model
and compensation can be set online through the configuration software
1.4 Specification
Parameters
Description
Power Supply
DC 9～36V
Power
Consumption
Typically≤0.3W; Models with Relay Output≤3W; Peak voltage
must not exceed +40V
Communication
Protocol
Modbus RTU (RS485, Modbus Address: 1~247)
Isolation
Not isolation. Common ground. Relay contact independent
output.
Data Format
“n,8,1”, “e,8,1”,”o,8,1”,”n,8,2”, etc
Baud Rate
2400, 4800, 9600, 19200, 38400, 57600, 115200Bps, etc
Digital Input
Wet contact/Dry contact
Logic level: 0～0.5V or shorted is 0, +3～30V or open circuit is 1
Input electrical level range: 0 ~ 30V, limit range is -10 ~ 40V

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Pulse counting: The counting sampling frequency is 1KHz, and
the width of the high and low levels of the pulse is required to
be >1mS; When each channel has a transition from 1 to 0, the
count value is incremented by 1; the maximum count value of
each channel is 4 bytes: FFFFFFFFH.
Digital Output
Relay 250V*5A(AC) or 14V*20A(DC)
Can be set as electrical level mode or pulse mode output, the
pulse width can be set from 0.1S to 25S
Support maintaining the relay state after power failure
Analog Input
Input range: Default 0/4-20mA, other options: 0-5V, 0-10V
Input signal: DC
Overload capacity: 1.2 times the range, still working;
instantaneous (<1S) 3 times the range, not damaged
Impedance: Voltage channel > 1 kΩ /, current channel ≤ 150Ω
RTD
PT100(Default) or PT1000, 2/3 Wire
Measurement
Accuracy
±0.2%FS
TC
B, E, J, K, N, R, S, T type thermocouple
2 wire input
Measurement Accuracy: ±0.15%FS (-20°C ~ +85°C)
Working
Temperature
-20～+70°C
Storage
-40～+85°C
Humidity
5～95% RH, No condensation (Below 40°C)
Altitude
0～3000 meters
Environment
No explosion, corrosive gas and conductive dust, no significant
shaking, vibration and shock
Temperature
Drift
≤100ppm/°C
Dimension
110mm×84mm×30mm(L*W*H)
Installation
35mm standard DIN rail installation
Thermocouple: Support B, E, J, K, N, R, S, T type thermocouples
Type
Temperature Measuring Range
Nominal Sensitivity
Cold Junction
Temperature
Range
B
-250°C ~ +1820°C
10.086
(+500°C ~
+1500°C)
0 ~ 125°C
E
-200°C ~ +1000°C
76.373
(0°C ~ +1000°C)
-55°C ~ +125°C
J
-210°C ~ +1200°C
57.953
-55°C ~ +125°C

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(0°C ~ + 750°C)
K
-200°C ~ +1372°C
41.276
(0°C ~ + 1000°C)
-55°C ~ +125°C
N
-200°C ~ +1300°C
36.256
(0°C ~ +1000°C)
-55°C ~ +125°C
R
-50°C ~ +1768°C
10.506
(0°C ~ +1000°C)
-50°C ~ +125°C
S
-50°C ~ +1768°C
9.587
(0°C ~ +1000°C)
-50°C ~ +125°C
T
-200°C ~ +400°C
52.18
(0°C ~ +400°C)
-55°C ~ +125°C
1.5 Packing List
1x DAMxxx I/O Module, Wiring terminal, USB, DIN rail bracket
Package does not include any sensor and adapter

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2 Installation
DIN Rail or Wall Mounted
2.1 Interface
DC IN 9~36V
+
DC9~36V positive input
–
DC9~36V negative input
DC Out 9~36V
+
DC9~36V positive output
–
DC9~36V negative output
RS485
A
Positive
B
Negative
Digital Input
1
Digital input 1
GND
Ground for 1~2
2
Digital input 2
3
Digital input 3
GND
Ground for 3~4
4
Digital input 4
Analog Input
1~4
Analog Input 1~4
GND
Ground
1+
Channel 1 Normally Open Contact
1-
Channel 1 Output ground

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Relay Output
2+
Channel 2 Normally Open Contact
2-
Channel 2 Output ground
3+
Channel 3 Normally Open Contact
3-
Channel 3 Output ground
4+
Channel 4 Normally Open Contact
4-
Channel 4 Output ground
PT100
1+
Channel 1 +
1-
Channel 1 -
GND
3 Wire System Ground of Channel 1
2+
Channel 2 +
2-
Channel 2 -
GND
3 Wire System Ground of Channel 2
3+
Channel 3 +
3-
Channel 3 -
GND
3 Wire System Ground of Channel 3
4+
Channel 4 +
4-
Channel 4 -
GND
3 Wire System Ground of Channel 4
TC
1+
Thermocouple Channel 1 +
1-
Thermocouple Channel 1 -
2+
Thermocouple Channel 2 +
2-
Thermocouple Channel 2 -
3+
Thermocouple Channel 3 +
3-
Thermocouple Channel 3 -
4+
Thermocouple Channel 4 +
4-
Thermocouple Channel 4 -
5+
Thermocouple Channel 5 +
5-
Thermocouple Channel 5 -
6+
Thermocouple Channel 6 +
6-
Thermocouple Channel 6 -
7+
Thermocouple Channel 7 +
7-
Thermocouple Channel 7 -
8+
Thermocouple Channel 8 +
8-
Thermocouple Channel 8 -

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2.2 Wiring
Digital Input
Analog Input

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RTD
TC
2.3 Testing
Please refer to the above figure for correct wiring. Make sure to disconnect all
signal sources before wiring to avoid danger and damage to equipment. After
checking and confirming that the wiring is correct, turn on the power for testing,
then the "Status" operating light will illuminate.
Default configuration: Address 1, baud rate 9600bps, data format "n,8,1";

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Users can change the settings by configuration software.
If the host computer only has RS-232 interface, it can be connected to the 485
network through the RS-232/RS-485 converter; it is recommended to use a 485
converter with isolation to improve the reliability of the system;
The A+ terminals of all devices on a bus are connected in parallel, and the B-
terminals are connected in parallel, and the connection cannot be reversed. Also,
the GND should connect together then connect to the Communication GND.
The RS485 network usually allow to connect maximum 32 device. if the device
more than 32, then please use the RS485 repeater to extend it. The RS-485
network should use the shield twist cable, the shield should connect to GND
independently.
The RS485 network communication distance maximum is 1200m, when the
communication baud rate is high will cause the communication distance short, in
this case, please use the RS485 repeater.
At the end of the RS485 network, if the communication quality is not good then
usually should connect a 120~300Ω/0.25W termination resistors. If the
communication quality is good then no need to connect this resistor.
The thermal resistance signal input can be connected in a 2-wire or 3-wire system,
please refer to the above diagram; when the sensor is not far from the module
and the resistance of the wire is negligible, a 2-wire system can be used (when
connected to a two-wire system, PT - short to GND); if the distance is long, it
should be connected in 3-wire system; for unused channels, PTA, PTB and
AGND should be shorted.
The the factory default refresh cycle of analog measurement data is 1.44S/time,
0.24S~2.4S, it can be set by yourself, and the interval is 0.24S;
The longer the data update period, the better the stability of the data, and it is
recommended to use 1-2S;
2.4 Setting
1) Connect USB to DAM I/O module through RS485 serial port
2) Connect DAM I/O module to PC by USB, and install USB Driver to the computer
3) Open configuration software, choose the correct “COM port” and “Model number”
to start configuring.

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3 Modbus Register
Modbus RTU Protocol
3.1 Digital I/O Modbus Register List
Model: DAM102, DAM104, DAM106, DAM108, DAM110, DAM112
Table 1: Digital Output, Function code 01/05/0F
Address
Definition
Description
0000H
DO1
1st digital output:＝1 triode close,＝0 open.
0001H
DO2
2nd digital output:＝1 triode close,＝0 open.
0002H
DO3
3rd digital output:＝1 triode close,＝0 open.
0003H
DO4
4th digital output:＝1 triode close,＝0 open.
Table 2: Digital Input, Function code 02
Address
Definition
Description
0000H
DI1
1st digital input:＝0 (0~0.5VDC) short/close, ＝1
(3~30VDC) Open/no signal.
0001H
DI2
2nd digital input:＝0 (0~0.5VDC) short/close, ＝1
(3~30VDC) Open/no signal.
0002H
DI3
3rd digital input:＝0 (0~0.5VDC) short/close, ＝1
(3~30VDC) Open/no signal.
0003H
DI4
4th digital input:＝0 (0~0.5VDC) short/close, ＝1
(3~30VDC) Open/no signal.
If the digital input=0, it means closed, if digital input=1, it means open or no signal
Table 3: Holding register, function code:03/10H
Address
Definition
Description

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9C4AH
9C4BH
DI1_Cnt
1st DI 32 bytes pulse counter; 4 bytes, MSB first
9C4CH
9C4DH
DI2_Cnt
2nd DI 32 bytes pulse counter; 4 bytes, MSB first
9C4EH
9C4FH
DI3_Cnt
3rd DI 32 bytes pulse counter; 4 bytes, MSB first
9C50H
9C51H
DI4_Cnt
4th DI 32 bytes pulse counter; 4 bytes, MSB first
Table 4: Counter, Holding register, function code:03/10H
Address
Definition
Description
9C40H
Mod
Device Model number
9C41H
Ver
Version
Above mentioned items are READ ONLY, below mentioned items can READ
and WRITE.
9C42H
ADDR
Device Address; 1~247; 0 is the broadcast
address.
9C43H
COM1
COM setting: high-order 8 bytes reserved.
The low-order bytes low 3 bytes baud rate:
0:115200; 1:57600; 2:38400; 3:19200; 4:9600;
5:4800; 6:2400; 7:1200
The lowest 3rd~7th bytes in the low-order bytes is
data format:
00 stands for 10bits, equal to n,8,1;
50 stands for 11bits, Even-parity check: e,8,1;
58 stands for 11bits, Odd Parity Check: o,8,1;
20 stands for 11 bits, non parity,
2 is stop bit, n,8,2;
Default is 4, equal to 9600bps. (9600, 8.N.1)

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9C44H
DO1-PUL
DO1 output type control: BIT15=1 :
Pulse Output control; BIT15=0 : TTL.
Low-order 8 byte: Pulse Width(time): 1~250 =
0.1~25.0 seconds; Default
Value: 10 (one second)
9C45H
DO2-PUL
DO2 output type control, detail description as
same as above DO1.
9C46H
DO3-PUL
DO3 output type control, detail description as
same as above DO1.
9C47H
DO4-PUL
DO4 output type control, detail description as
same as above DO1.
9C48H
DI Pulse
Counter
Low-order 4 byte is the Pulse Counter:
BIT0=1, Enable the DI1 as a Pulse Counter, =0:
Disable
BIT1=1, Enable the DI2 as a Pulse Counter, =0:
Disable
BIT2=1, Enable the DI3 as a Pulse Counter, =0:
Disable
BIT3=1, Enable the DI4 as a Pulse Counter, =0:
Disable
9C49H
Function
when
Power
Failure
Low-order 2 byte is the additional function when
the power failure:
BIT0=1: Save the pulse counter value;
BIT0=0 : Don’t save the pulse counter value;
BIT1=1 : Keep the relay status;
BIT1=0 : Don’t keep the relay status.
3.2 Analog/PT100 Input Register List
Model: DAM114, DAM116, DAM118, DAM120, DAM124

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Table 1: Holding register, function code:03/06/10H
Address
Definition
Description
9C40H
Mod
Device Model number
9C41H
Ver
Version
9C42H
AdVal[1]
1st PT100 ADC_Value, range:0-65535, for adjust
the temperature
9C43H
AdVal[2]
2nd PT100 ADC_Value, range:0-65535, for adjust
the temperature
9C44H
AdVal[3]
3rd PT100 ADC_Value ,range:0-65535, for adjust
the temperature
9C45H
AdVal[4]
4th PT100 ADC_Value ,range:0-65535, for adjust
the temperature
9C46H
AdVal[5]
1st AIN ADC_Value, range:0-65535, for adjust at
site
9C47H
AdVal[6]
2nd AIN ADC_Value, range:0-65535, for adjust at
site
9C48H
AdVal[7]
3rd AIN ADC_Value , range:0-65535, for adjust at
site
9C49H
AdVal[8]
4th AIN ADC_Value, range:0-65535, for adjust at
site
9C4AH
AI1
The 1st Analog Input:
1. If enable the Max/Min, then it will calculate the
real value of the sensors.
2. If disable the Max/Min:
a) 0～10000 correspond to 0～10V
b) 0～10000 correspond to 0～5V
c) 0～10000 correspond to 0～20mA
d) 0～10000 correspond to 4～20mA
9C4BH
AI2
2nd Analog Input, detail description as same as
above AI1.
9C4CH
AI3
3rd Analog Input, detail description as same as

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above AI1.
9C4DH
AI4
4th Analog Input, detail description as same as
above AI1.
9C4EH
PT1
1st channel for measuring the temperature,
unit :0.1°C Int, the actual value=DATA/10, unit:°C
9C4FH
PT2
2nd channel for temperature, detail description as
same as above PT1.
9C50H
PT3
3rd channel for temperature, detail description as
same as above PT1.
9C51H
PT4
4th channel for temperature, detail description as
same as above PT1.
Above mentioned items are READ ONLY, below mentioned items can READ
and WRITE.
9C52H
ADDR
Device Address; 1~247; 0 is the broadcast
address.
9C53H
COM1
COM setting: high-order 8 bytes reserved.
The low-order bytes low 3 bytes baud rate:
0:115200; 1:57600; 2:38400; 3:19200; 4:9600;
5:4800; 6:2400; 7:1200
The lowest 3rd~7th bytes in the low-order bytes is
data format:
00 stands for 10bits,equal to n,8,1;
50 stands for 11bits, Even-parity check: e,8,1;
58 stands for 11bits, Odd Parity Check: o,8,1;
20 stands for 11 bits, non parity,
2 is stop bit,n,8,2;
Default is 4, equal to 9600bps. (9600, 8.N.1)
9C54H
AIMode1
Analog input model1 setting, low-order 2 bytes
0:0-5V;
1:0-10V;

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2:0-20mA;
3:4-20mA;
Highest order byte b7=1 is enable the Max/Min;
0= disable
9C55H
AIMode2
AIN 2 Setting, as same as the AIMode1
9C56H
AIMode3
AIN 3 Setting, as same as the AIMode1
9C57H
AIMode4
AIN 4 Setting, as same as the AIMode1
9C58H
AdMax1
AIN1 Max Range, default: 5000
9C59H
AdMax2
AIN2 Max Range, default: 5000
9C5AH
AdMax3
AIN3 Max Range, default: 5000
9C5BH
AdMax4
AIN4 Max Range, default: 5000
9C5CH
AdMin1
AIN1 Min Range, default: 0
9C5DH
AdMin2
AIN2 Min Range, default: 0
9C5EH
AdMin3
AIN3 Min Range, default: 0
9C5FH
AdMin4
AIN4 Min Range, default: 0
9C60H
Pt_0C[1]
1st PT100 input calibrated values in 0°C
Remark: To testing the PT100 in 0°C,or connect to
a 100R resistance to get the ADC_Value, then use
this value to adjust the accuracy,
Default:4500
9C61H
Pt_0C[2]
2nd PT100 input calibrated values in 0°C
9C62H
Pt_0C[3]
3rd PT100 input calibrated values in 0°C
9C63H
Pt_0C[4]
4th PT100 input calibrated values in 0°C
9C64H
Pt_50C[1]
1st PT100 input calibrated values in 50°C
Remark: To testing the PT100 in 50°C, or connect
to a 100R resistance to get the ADC_Value, then
use this value to adjust the accuracy.
9C65H
Pt_50C[2]
2nd PT100 input calibrated values in 50°C
9C66H
Pt_50C[3]
3rd PT100 input calibrated values in 50°C

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9C67H
Pt_50C[4]
4th PT100 input calibrated values in 50°C
If the PT100 temperature sensor cannot measuring the correct value, then need to
adjust it, for 0°C(Pt_0Cx) and 50°C(Pt_50Cx).
3.3 Thermocouple Input Modbus Register List
Model: DAM128
Table 1: Holding register, function code:03/06/10H
Address
Definition
Description
9C40H
Mod
Device Model number
9C41H
Ver
Version
9C42H
AdVal[1]
1st channel for measuring the temperature,
unit :0.1°C Int, the actual value=DATA/10, unit:°C
9C43H
AdVal[2]
2nd channel for temperature, detail description as
same as above
9C44H
AdVal[3]
3rd channel for temperature, detail description as
same as above
9C45H
AdVal[4]
4th channel for temperature, detail description as
same as above
9C46H
AdVal[5]
5th channel for temperature, detail description as
same as above
9C47H
AdVal[6]
6th channel for temperature, detail description as
same as above
9C48H
AdVal[7]
7th channel for temperature, detail description as
same as above
9C49H
AdVal[8]
8th channel for temperature, detail description as
same as above

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4 Warranty
1) This equipment will be repaired free of charge for any material or quality problems
within one year from the date of purchase.
2) This one-year warranty does not cover any product failure caused by man-made
damage, improper operation, etc.
5 Technical Support
Shenzhen Beilai Technology Co., Ltd.
Website: https://www.bliiot.com