ZG09S

Overview

Issued

1 Oct 2 2018 JamesHuang Review by Radiant.

1 GENERAL DESCRIPTION ................................................................................................................................................................ 3

2 ABBREVIATIONS AND TERMINOLOGY ......................................................................................................................................... 3

3 FEATURES OF DESIGN ................................................................................................................................................................... 3

4 SPECIFICATION .............................................................................................................................................................................. 3

5 UART ............................................................................................................................................................................................. 6

6 RS485 通訊 ................................................................................................................................................................................ 17

7 I2C 通訊 ..................................................................................................................................................................................... 17

8 PWM 輸出 ................................................................................................................................................................................. 22

9 DAV 輸出 .................................................................................................................................................................................... 22

10 響應時間 ................................................................................................................................................................................. 22

Features

超越室內空氣品質需求，量測範圍可達 0-10000ppm

CO2 RMS 雜訊 <10 ppm @ 400 ppm <20 ppm @ 1000 ppm

最大耗電流 (0.8 ms 截取測試 ) <190 mA

紅外線關閉平均耗電流 <10 mA

整體平均耗電流 <34 mA

外觀尺寸 32.2mm x 20.2mm x 10.4mm

UART 3.3V level Modbus RTU protocol

RS485 SCL pin for 485 R/T control pin

注意：圖片尺寸僅供參考，實際尺寸以標示為主

Fig1. 模組外觀尺寸圖

接腳說明

接腳名稱 功能

PWM CO2 ppm PWM output

DAO DAC output

G Ground

ZG09 series UART 使用的是 Modbus RTU 協議，指令結構分成發送 (Send) 與接收 (Receive) ，如下： 發送 (Send)

发送:FE 03 00 0B 00 01 E1 C7 接收:FE 03 02 01 C8 AC 56 CRC=56AC 接收 (Receive)

Example: CO2 read sequence in Function 3 Master Transmit:

<FE> <03> <00> <0B> <00> <01> <E1> <C7> Slave Reply:

*N = Quantity of Registers

<ID> <Function code> < Byte count byte 0 > <data_byte 0 data_byte n > <CRC byte0 + CRC byte1>

Error:

Error code 1Byte 0x83

註 1 ：起始位址 = 想要讀取該筆資料的位址，例如： CO2 值 = 0x0B ( 參見起始位址表 ) 註 2 ：讀回資料量 = 資料內容的長度 (N) 註 3 ：接收的資料內容的長度 (N) = 發送的讀取資料量 x 2 0x03 Read hold register 0x04 Read input register 0x06 Write CRC 程式範例 :

檢查碼 unsigned int Crc16(unsigned char * data, unsigned char length) {

int j;

unsigned int reg_crc=0xFFFF;

while(length--)

reg_crc ^= *data++;

for(j=0;j<8;j++)

if(reg_crc & 0x01) /* LSB(b0)=1 */

reg_crc=reg_crc >>1 ^ 0xA001;

else

reg_crc=reg_crc >>1;

return reg_crc;

檢查碼 ( 查表法 ) unsigned int Crc(unsigned char *ucTx, unsigned int Len) { if (Len && ucTx)

unsigned char *ucPtr=ucTx;

unsigned char ucCRCHi = 0xff;

unsigned char ucCRCLo = 0xff;

unsigned uIndex;

while(Len--)

uIndex = ucCRCHi ^ *ucPtr++;

ucCRCHi = ucCRCLo ^ ucCRCHigh[uIndex];

ucCRCLo = ucCRCLow[uIndex];

return (unsigned int)(ucCRCLo << 8) | (unsigned int)ucCRCHi;

return 0;

unsigned char ucCRCHigh[] = {

0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,

0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,

0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,

0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,

0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,

0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,

0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,

0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,

0x40,0x01,0xc0,0x80,0x41,0x01,0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x01,0xc0,

0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,0x01,

0xc0,0x80,0x41,0x00,0xc1,0x81,0x40,0x00,0xc1,0x81,0x40,0x01,0xc0,0x80,0x41,

unsigned char ucCRCLow[] = {

0x00,0xc0,0xc1,0x01,0xc3,0x03,0x02,0xc2,0xc6,0x06,0x07,0xc7,0x05,0xc5,0xc4,

0x04,0xcc,0x0c,0x0d,0xcd,0x0f,0xcf,0xce,0x0e,0x0a,0xca,0xcb,0x0b,0xc9,0x09,

0x08,0xc8,0xd8,0x18,0x19,0xd9,0x1b,0xdb,0xda,0x1a,0x1e,0xde,0xdf,0x1f,0xdd,

0x1d,0x1c,0xdc,0x14,0xd4,0xd5,0x15,0xd7,0x17,0x16,0xd6,0xd2,0x12,0x13,0xd3,

0x11,0xd1,0xd0,0x10,0xf0,0x30,0x31,0xf1,0x33,0xf3,0xf2,0x32,0x36,0xf6,0xf7,

0x37,0xf5,0x35,0x34,0xf4,0x3c,0xfc,0xfd,0x3d,0xff,0x3f,0x3e,0xfe,0xfa,0x3a,

0x3b,0xfb,0x39,0xf9,0xf8,0x38,0x28,0xe8,0xe9,0x29,0xeb,0x2b,0x2a,0xea,0xee,

0x2e,0x2f,0xef,0x2d,0xed,0xec,0x2c,0xe4,0x24,0x25,0xe5,0x27,0xe7,0xe6,0x26,

0x22,0xe2,0xe3,0x23,0xe1,0x21,0x20,0xe0,0xa0,0x60,0x61,0xa1,0x63,0xa3,0xa2,

0x62,0x66,0xa6,0xa7,0x67,0xa5,0x65,0x64,0xa4,0x6c,0xac,0xad,0x6d,0xaf,0x6f,

0x6e,0xae,0xaa,0x6a,0x6b,0xab,0x69,0xa9,0xa8,0x68,0x78,0xb8,0xb9,0x79,0xbb,

0x7b,0x7a,0xba,0xbe,0x7e,0x7f,0xbf,0x7d,0xbd,0xbc,0x7c,0xb4,0x74,0x75,0xb5,

0x77,0xb7,0xb6,0x76,0x72,0xb2,0xb3,0x73,0xb1,0x71,0x70,0xb0,0x50,0x90,0x91,

0x51,0x93,0x53,0x52,0x92,0x96,0x56,0x57,0x97,0x55,0x95,0x94,0x54,0x9c,0x5c,

0x5d,0x9d,0x5f,0x9f,0x9e,0x5e,0x5a,0x9a,0x9b,0x5b,0x99,0x59,0x58,0x98,0x88,

0x48,0x49,0x89,0x4b,0x8b,0x8a,0x4a,0x4e,0x8e,0x8f,0x4f,0x8d,0x4d,0x4c,0x8c,

0x44,0x84,0x85,0x45,0x87,0x47,0x46,0x86,0x82,0x42,0x43,0x83,0x41,0x81,0x80,

Function code 3 hold register: Address Name REG/EEP Function Description

SlaveID EEP 、 R/W ModBus ID ID 設定 出廠預設 0x01 1~249 for slave 250 (0xFA) and 254 (0xFE) 為廣播預 留，無法設定

01H BPS EEP 、 R/W Baud rate Uart Parity 設定 ( 需要 reset 或重新 上電才會套用 ) 0x00 : 9600 (default) 0x01 : 19200 0x02 : 38400 0x03 : 57600

02H SET EEP 、 R/W Uart Parity Uart Parity 設定 ( 需要 reset 或重新 上電才會套用 ) 0x00:n82 0x01:n81 (default) 0x02:e81 0x03:o81

04H Filter EEP 、 R/W 數位濾波器 0 Enable

2:Hold mode  Off Lamp 停止量 CO2

06H I2C ID 6 EEP 、 R/W I2C 位置選擇 1~127(07FH) for I2C slave ID ， 255 0FFH for SDA calibration in I/O operating and 485 R/T control pin ， 0FFH (default)

0AH Sys status REG 、 R 系統狀態 Read only: 00:Starting 04:Ambinet over operating Temperature 12:CO2 low limit 13:CO2 High Limit 14:Raw Data Error 15Parameter check sum error

0BH CO2 Value REG 、 R CO2 讀值 Read only

0FH Atm Value 1 REG 、 R/W mmHg 氣壓輸入 760.0mmHg(default)

10H Atm Meter 1 REG 、 R/W 高度輸入 0meter(default)

11H Atmhpa 1 REG 、 R/W Hpa 氣壓輸入 1013hpa (default)

14H Control mode 2 REG 、 R/W 控制模式 ( 暫存 ) 0:Polling mode 1:Stream mode 2:Hold mode

15H AL1 3 EEP 、 R/W Lower limit concentration for alarm signal

16H AL2 3 EEP 、 R/W Upper limit concentration for alarm signal

20H CO2 offset EEP 、 R/W CO2 Offset adjustment 新讀值 = 現在 CO2 值 ±1000ppm ， 0ppm(default)

21H CO2 Gain EEP 、 R/W Gain range = 0.7~1.3 數學公式：新讀值 = 現在 CO2 值 *Gain 增益 (21H)+offset 偏移 (20H ) 0.7=7000 1.0=10000(default) 1.3=13000

28H Cali Set 4 REG 、 W Any concentration of Gas calibration

29H Calln Value Set1 5 EEP 、 R/W 400ppm calibration by SDA pin

SDA=0 ， 5-8sec for 400ppm offset

2AH Calln Value Set2 5 EEP 、 R/W 0ppm calibration by SDA pin

SDA=0 ， >16sec for 0ppm

Master Transmit: <FE> <03> <00> <0F> <00> <01> <A0> <06> Slave Reply: <FE> <03> <02> <1D> <B0> <A4> <B4> 1DB0=7600=760.0mmHg

(b) Write Air Pressure(mmHg) Example input: 730mmHg

Master Transmit: <FE> <06> <00> <0F> <1C> <84> <A5> <65> Slave Reply: <FE> <06> <00> <0F> <1C> <84> <A5> <65> 當寫入 Air pressure (0FH) 730mmHg 同時計算與轉換並存入相對的 Altitude mode(10H) meters 、 Air pressure input (11H) hPa

Read (10H) check Altitude meter value

Master Transmit: <FE> <03> <00> <10> <00> <01> <91> <C0> Slave Reply: <FE> <03> <02> <0C> <EA> <28> <DF> 0CEA=3306=330.6meters

Read (11H) check Air Pressure hpa value

Master Transmit: <FE> <03> <00> <11> <00> <01> <C0> <00> Slave Reply: <FE> <03> <02> <03> <CD> <6D> <35> 03CD=973hpa

Note2: Control mode set has two way, use Addr=5(0x05) Set will set to EEPROM,Power Reset will Keep the Set. Use addr =20 (0x14) Set will only set to Register,Power Reset will clearn the set. (2) Control mode write into EEPROM

(c) 0: Polling mode: 就是一問一答為 ModBus 標準模式

Polling mode operating sequence Master Transmit: <FE> <06> <00> <05> <00> <00> <8D> <C4> Slave Reply: <FE> <06> <00> <05> <00> <00> <8D> <C4> Make sure the settings are correct and the device is running in polling mode.

Slave Reply: <FE> <06> <00> <05> <00> <01> <4C> <04> Make sure the settings are correct and the device is running in Stream mode.

After the command is confirmed, the CO2 value and the Sensor temperature value are returned every 2 seconds. <00> <64> <04> <02> <91> <0B> <85> <74> <22> 0291=657ppm 0B85=29.49 ℃ ， 收到 Sensor 溫度需除 100 才為實際溫度 ( 單位為 1/100 ‘ C)

Hold mode operating sequence: Master Transmit: <FE> <06> <00> <05> <00> <02> <0C> <05> This command is written to the EEPROM power off is not canceled must be written to the polling mode Slave Reply: <FE> <06> <00> <05> <00> <02> <0C> <05> Make sure the settings are correct and the device is running in hold mode. At this time, the lamp is off and the CO2

is not measured. The power will not be canceled. Only the CPU waits for the stream or polling mode command to start the lamp and measure CO2 again.

(3) Control mode write into Register

(a) Stream mode operating sequence:

Master Transmit: <FE> <06> <00> <14> <00> <01> <1C> <01> This command is written to the Register Slave Reply: <FE> <06> <00> <14> <00> <01> <1C> <01> Make sure the settings are correct and the device is running in Stream mode.

After the command is confirmed, the CO2 value and the Sensor temperature value are returned every 2 seconds. <00> <64> <04> <02> <91> <0B> <85> <74> <22> 0291=657ppm 0B85=29.49 ℃ ， 收到 Sensor 溫度需除 100 才為實際溫度

Hold mode operating sequence: Master Transmit: <FE> <06> <00> <14> <00> <02> <5C> <00> This command is written to the Register Slave Reply: <FE> <06> <00> <14> <00> <02> <5C> <00> Make sure the settings are correct and the device is running in hold mode. At this time, the lamp is off and the CO2

is not measured. The power will be canceled. Or the CPU waits for the stream or polling mode command to start the lamp and measure CO2 again.

Master Transmit: AL1 0ppm <FE> <06> <00> <15> <00> <00> <8C> <01> This command is written to the Register Slave Reply: <FE> <06> <00> <15> <00> <00> <8C> <01> Master Transmit: AL2 10000ppm <FE> <06> <00> <16> <27> <10> <66> <3D> This command is written to the Register Slave Reply: <FE> <06> <00> <16> <27> <10> <66> <3D> Vout: The PWM :0-VCC DAV output: 0-1V

(2) Set AL1 and AL2 sequence: 800~1200ppm for HVAC

Vout

Master Transmit: AL1 800ppm <FE> <06> <00> <15> <03> <20> <8D> <29> This command is written to the EEPROM Slave Reply: <FE> <06> <00> <15> <03> <20> <8D> <29> Master Transmit: AL2 1200ppm <FE> <06> <00> <16> <04> <B0> <7F> <75> This command is written to the Register Slave Reply: <FE> <06> <00> <16> <04> <B0> <7F> <75> Vout: The PWM :0-VCC DAV output: 0-1V

(3) Set AL1 and AL2 sequence: 1400~400ppm for Green Hours

Master Transmit: AL1 1400ppm <FE> <06> <00> <15> <05> <78> <8F> <73> This command is written to the Register Slave Reply: <FE> <06> <00> <15> <05> <78> <8F> <73> Master Transmit: AL2 400ppm <FE> <06> <00> <16> <01> <19> <7D> <FD> This command is written to the Register Slave Reply: <FE> <06> <00> <16> <01> <19> <7D> <FD> Vout: The PWM :0-VCC DAV output: 0-1V

Master Transmit: <FE> <06> <00> <28> <03> <E8> <1D> <73> Slave Reply: <FE> <06> <00> <28> <03> <E8> <1D> <73>

(3) 校正後讀校正後的結果是否接近 1000ppm

Master Transmit: <FE> <03> <00> <0B> <00> <01> <E1> <C7> Slave Reply: <FE> <03> <02> <03> <E9> <6D> <2E> 3E9=1001ppm

ZG09 也可放置於戶外以400ppm 做為標準，人員不要靠近呼吸同時放置10 分鐘後，依照下述方式進行400ppm 校正 。 (1) 如已經放置 10 分鐘 ， 寫入 28H 期望值 400ppm

Master Transmit: <FE> <06> <00> <28> <01> <90> <1C> <31> Slave Reply: <FE> <06> <00> <28> <01> <90> <1C> <31>

(2) 校正後讀校正後的結果是否接近400ppm

Master Transmit: <FE> <03> <00> <0B> <00> <01> <E1> <C7> Slave Reply: <FE> <03> <02> <01> <90> <AD> <AC> 190h=400ppm

Master Transmit: <FE> <06> <00> <20> <00> <00> <9C> <0F> Slave Reply: <FE> <06> <00> <20> <00> <00> <9C> <0F>

(2) 讀 ZG09 CO2 值為 1050ppm 多了 55ppm

Master Transmit: <FE> <03> <00> <0B> <00> <01> <E1> <C7> Slave Reply: <FE> <03> <02> <04> <1F> <EF> <58> 41F=1055ppm

(3) 將 -55ppm 的 offset 存入 ZG09

Master Transmit: <FE> <06> <00> <20> <FF> <C9> <1D> <A9> Slave Reply: <FE> <06> <00> <20> <FF> <C9> <1D> <A9>

<FE> <03> <00> <0B> <00> <01> <E1> <C7> Slave Reply: <FE> <03> <02> <03> <E9> <6D> <2E> 3E9=1001ppm

Perform set1 Perform set2

Note6: Address 06H: 0FFH (default) for calibration in I/O operating and 485 R/T control pin

Write in to 1~127 for ID ， (07FH) for I2C slave ID ， 128~254 no use ，設置後必須關電重啟才會動作或 Reset 。 (1) 設置 I2C ID 下例 ID=68h

Master Transmit: <FE> <06> <00> <06> <00> <68> <7C> <2A> Slave Reply: <FE> <06> <00> <06> <00> <68> <7C> <2A>

(2) Reset or Re-Power 下例為 Reset

<FE> <06> <00> <09> <00> <01> <8C> <07> Slave Reply: <FE> ………….Reset 過程中也會停止傳送 。 UART 與 I2C ID=68h 同時動作 ， 使用者可以使用 UART 或 I2C ID=68h

Master Transmit: <FE> <06> <00> <06> <00> <FF> <3D> <84> Slave Reply: <FE> <06> <00> <06> <00> <FF> <3D> <84>

(2) Reset or Re-Power 才會改變 ， 下例為 Reset

<FE> <06> <00> <09> <00> <01> <8C> <07> Slave Reply: <FE> ………….Reset 過程中也會停止傳送 。

Note7: ABC 調整預設是關閉 ABC Tune Speed 。是指每日 ABC 自動調整的上限 ( 預設是 100ppm 每天調整量 ) 。防止 ABC 的過度調整 ABC It is recommended to re-open in a well-ventilated environment. This function is not recommended for greenhouses, wine cellars, confined or poorly ventilated spaces, which will affect accuracy. Function 4 input register: Address Name REG/EEP Function Description

00H SYS Status REG 、 R 系統狀態 Read only: 00:Starting 04:Ambinet over operating Temperature 12:CO2 low limit 13:CO2 High Limit 14:Raw Data Error 15Parameter check sum error

Example: CO2 read sequence in Function 4 Master Transmit:

Input Registers N* x 2 Bytes

Applications

(3) 確認 SCL and SDA 串列訊號線有 pull-up resistors ， 如沒有請加入如下圖的電路 ， Rp 建議使用 2.2K 。 The ZG09 supports a bi-directional, 2-wire bus and data transmission protocol. A device that sends data onto the bus is defined as a transmitter and a device receiving data as a receiver. The device that controls the message is called a master. The devices that are controlled by the master are referred to as slaves. The bus must be controlled by a master device that generates the serial clock (SCL), controls the bus access, and generates the START and STOP conditions. The ZG09 operates as a slave on the 2- wire bus. A typical bus configuration using this 2-wire protocol is show in Figure 7-1.

Figure7- 1: 2-WIRE BUS CONFIGURATION

圖二 Data transfer sequence for random Read command Address Name REG/EEP Function Description

02H Sys Status MSB REG 、 R Status register MSB Monitors the operating status--read-only

03H CO2 Value LSB REG 、 R Low-order CO2 concentration data

Read only

0DH Alarm L EEP 、 R/W Lower limit concentration for alarm signal

ppm= Value*10

Write:(0~120)*10;0ppm~1200p pm ， set 255 for clear Read for check offset value: 12H for LSB 、 13H for MSB

Green:DI Orange:SCL

Yellow:D O

-> 43 (101011)

如果我們要進行寫入 (Write) 的動作的話 我們依照下列的做法 :

1. Send a start sequence 2. Send I2C address with the R/W bit low (even address) 3. Send Internal address of the bearing register 4. Send a start sequence again (repeated start) (with LSB=1) 5. Send I2C address with the R/W bit high (odd address) 6. Read data byte from ZG09 7. Send the stop sequence.

●Data transfer from Master side: ○Data transfer from Slave side:

Data transfer from Master side : 11010000 00000011 11010001 Data transfer 1001000 00000001 Slave side : (97H) (01H)

Register 03H-LSB 04H-MSB

Concentration 01 97H=407ppm

Usage & Handling

EEP Electrically-Erasable Programmable Read-Only Memory

REG Register

RMS Root Mean Square

PWM Pulse Width Modulation