Inhand RS-CO2 WS-N01 CO2 Temperature and Humidity Transmitter Instruction Manual

: June 5, 2024
: Inhand

Table of Contents

Inhand RS-CO2 WS-N01 CO2 Temperature and Humidity Transmitter
Product Introduction
Device Installation Instruction
- Check before the device installation
Configuration Software Installation and Application
Communication Agreement
Common Problem and Solution
- Device cannot be connected with PLC or computer
Document History
Shell Size
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Inhand RS-CO2 WS-N01 CO2 Temperature and Humidity Transmitter

Product Introduction

Product summary
The transmitter is widely used in communication room, warehouse buildings and automatic temperature and humidity monitoring needs of the place, the sensor input power, temperature measurement unit, the signal output is completely isolated from three parts. Safe, reliable, beautiful appearance, easy installation.

Function feature
This product uses high sensitivity gas detection probe, signal stability, high precision. With a wide measuring range, good linearity, easy to use, easy to install, transmission distance and so on.

Main technology parameter

Power supply: 10 ~ 30V DC
average current: <85mA
CO2 Measurement range: 0 ~ 5000ppm (can be customized)
Accuracy of CO2: ± (40ppm + 3% F · S) (25 ℃)
Temperature measurement range: -40 ℃ ~ 80 ℃
Humidity measurement range: 0 ~ 100% RH
Stability: <2% F · S
Data Update Time: 2s
Temperature effects: comes with temperature Compensation
Temperature accuracy: ± 0.5 ℃
Humidity accuracy: ± 3% RH
Nonlinearity: <1% F · S
Warm-up time: 2min (available), 10min (maximum precision)
Output signal: 485, relay (optional)

System frame diagram

Device Installation Instruction

Check before the device installation

Device list:

One transmitter equipment
Certificate, warranty card, and after sales service card and so on
one 12V/2A waterproof power (select)
USB transfer to 485 (select)

Joggle instruction
Range 10V-30V of wide voltage is available in power input, the A wire and B wire cannot be connected contrary when connecting to 485 signals, and the address among several devices on the total wire cannot be conflicted.

	Line color	Description
power	brown	Power supply is (10 ~ 30V DC)
black	Power supply negative
Communication	yellow	485-A
blue	485-B

485 field wiring instructions
Multiple 485 models of equipment access the same bus, the field wiring has certain requirements, please refer to the specific parameters Test data packets in the “485 device field wiring manual.”

Configuration Software Installation and Application

Software selection

Opening the datagram, and choosing “test software” —- “485 parameter setting software” and finding out and opening it.

Parameter setting

select the right COM port (“my computer——properties——deceive manager——Port”) and check the COM port from the Port, the name of several different kinds of 485 transmitter drive
connect with only one device and be powered, and click “test the baud rate” of the software to test the device baud rate and address, the default baud rate is 4800bit/s and default address is 0x01
Change the address and baud rate based on the application requirement, and meanwhile the current situation of the device function can be checked
if the test is not success, please check the device wring and 485 drive installation situations again

Communication Agreement

Communication basic parameter

Stop Bit	1bit
Error check	CRC（Redundant cyclic codes）

Baud Rat

e

| 2400bit/s, 4800bit/s, 9600 bit/s options, the factory default 4800bit/s

The concept of data frame format

Apply Modbus-RTU communication rules, the format below：

Initial structure ≥4 byte time
Address code = 1 byte
Function code = 1 byte
Data area = N byte
Incorrect revision = 16 byte CRC code
Ending structure ≥4 byte time
Address code：the address of the transmitter，and will be the only (factory default 0x01) in the communication net. Function code ： the order function orders from
host computer; this transmitter only uses function code 0x03(reading register date).
Data area：data area is the specific communication data, attention16bits data high byte in front!
CRC codetwo-byte revision code.
Main computer enquires frame structure

Addr ess

Code

| Functi on

Code

| Register Origin Address| Register Length| Revision Code

in Low Position

| Revision Code

in High

Position

---|---|---|---|---|---
1byte| 1byte| 2bytes| 2bytes| 1byte| 1byte

Accessorial computer replying frame structure：

Addres s Code| Func tion Code| Effectiv

e ness Byte NO.

| Data Area One| Data Are a Two| Data Area N| Revision Code
---|---|---|---|---|---|---
1byte| 1byte| 1byte| 2bytes| 2bytes| 2bytes| 2bytes

Register address

Register	PLC or	Content	Operati	Scope and definition
Address	Configuration

Address

| | ion| of the definition
---|---|---|---|---
0000 H| 40001| Temperature| Read only| 0~1000
0001 H| 40002| humidity| Read

only

| -400~1000
0002 H| 40003| CO2

concentration

| Read and write| 0~5000
0030 H| 40049| Temperature upper limit alarm

value

| Read and write| -400~1000
0031 H| 40050| Temperature lower limit alarm

value

| Read and write| -400~1000
0032 H| 40051| Temperature alarm back to the

difference

| Read and write| 0~1000
0033 H| 40052| Temperature calibration value| Read and write| -400~1000
0034 H| 40053| The temperature relay

is enabled

| Read and write| 1 is enabled, 0 is disabled
0035 H| 40054| High humidity alarm

value

| Read and write| 0~1000
0036 H| 40055| Low alarm

value of humidity

| Read

and write

| 0~1000
0037 H| 40056| Humidity alarm back to the

difference

| Read and write| 0~1000
0038 H| 40057| Humidity

calibration value

| Read

and write

| -400~1000
0039 H| 40058| The humidity relay is| Read and| 1 is enabled, 0 is disabled
| | enabled| write|
---|---|---|---|---
003a H| 40059| CO2 high

alarm value

| Read

and write

| 0~5000
003b H| 40060| CO2 lower

limit alarm value

| Read

and write

| 0~5000
003c H| 40061| CO2 alarm

back to the difference

| Read and write| 0~5000
003d H| 40062| CO2

calibration value

| Read

and write

and write

| 1 for the suction, 0

for the disconnect

Communication agreement example and explaining

For example: Read the CO2 value at device address 0x01 enquiry frame：

Address Code| Function Code| Start Address| Data Length| Check Dig it

Low

| Check Digit High
---|---|---|---|---|---
0x01| 0x03| 0x00 0x0

2

| 0x00 0x01| 0x25| 0xCA

Replication frame： (For example, read CO2 to 3000 ppm）

Address Code| Functio n

Code

| Returns the number of valid bytes| Light intensity

value

| Check

digit low

| Check digit high
---|---|---|---|---|---
0x01| 0x03| 0x02| 0x0B 0xB8| 0xBF| 0x06

CO2： BB8 H (Hex) = 3000 => CO2 = 3000 ppm

For example： Read the CO2 with Temperature and humidity value at device address 0x01

enquiry frame：

Address Code| Function Code| Start Address| Data Length| Check Di git| Check Digit High
---|---|---|---|---|---
| | | | Low|
---|---|---|---|---|---

0x01

|

0x03

| 0x00 0x0

0

| 0x00 0x0

3

|

0x05

| 0xCB

Replication frame： (when reading temperature is -7.5℃，humidity is 35.9%RH, CO2 is 3000ppm）

value

| Check digit low| Check digit high
---|---|---|---|---|---|---|---
0x01| 0x03| 0x06| 0x01 0x67| 0xFF 0xB5| 0x0B 0xB8| 0x33| 0xDC

Common Problem and Solution

Device cannot be connected with PLC or computer

Reasons possible:

Several COM ports in the computer, the port be chosen is incorrect.
The device address is wrong, or some device addresses are repeat.(all factory defaults are ).
Baud rate, revision mode, data position and stop position are wrong.
The main computer and polling interval is too small and time waiting for replying is too short, and all need to set over 200ms.
The 485 general wire is broken or the A wire and B wire are connected in the wrong side.
To many devices or too long wires, the power needs to be chosen nearby, add 485 intensifiers, and add 120Ω terminal electric resistance.
The driver of USB transfer to 485is not installed or damaged.
The device is broken.