E+E EE872 Quick Start Guide

QUICK GUIDE

Voltage output

Current output

EE872 - Modular CO2 Probe for Demanding Applications

(Full User Guide at www.epluse.com/EE872)

Connection Diagram

Pin number Function Wire colors for accessories:

- Couplig ange HA010705

- Connection cable HA010819/820/821

1 Supply voltage brown

2 B RS485 (D-) or voltage output white

3 GND blue

4 A RS485 (D+) or current output black

5 Conguration pin gray

Selection between Analogue Output and RS485 Interface

Conguration pin connected to GND:

• EE872 features analogue outputs independently of its original setup.

Conguration pin not connected:

• EE872 set to RS485 interface (option P1 in the order code) features RS485 interface.

• EE872 set to analogue outputs (option GA7 or GA11 in the order code): the RS485 interface is active for the first 10 seconds after power on and awaits connection with the EE-PCS Product Configuration Software. This allows for setup changes or adjustment of the EE872. If the connection to EE-PCS is not established within 10 seconds, the device automatically changes to analogue output.

1 2

front view

device plug

Modbus Setup

Factory settings Selectable values

Baud rate 9600 9600, 19200, 38400, 57600

Data bits 8 8

Parity Even None, odd, even

Stop bits 1 1, 2

Slave address 237 1…247

The recommended settings for multiple devices in a Modbus RTU network are 9600, 8, Even, 1 The EE872 represents 1/10 unit load in a Modbus network.

Device address, baud rate, parity and stop bits can be set via:

1. EE-PCS, Product Configuration Software and the appropriate configuration cable HA011018. The EE-PCS can be downloaded free of charge from www.epluse.com/Configurator.

2. Modbus protocol in the register 60001 (0x00) and 60002 (0x01). See Application Note Modbus AN0103 (available on www.epluse.com/EE872)

The serial number as ASCII-code is located at read register address 30001-30008 (16 bit per address). The firmware version is located at register address 30009 (bit 15...8 = major release; bit 7...0 = minor release). The sensor name is located at register address 30010.

INTEGER 16 bit

Parameter Register number1) [DEC] Protocol Address2) [HEX]

Read and write register: function code 0x03 / 0x06

Slave-ID Modbus address 0001 0x00 Modbus protocol settings

0002 0x01

INFO (read register):

Parameter Register number1) [DEC] Protocol Address2) [HEX]

Read and write register: function code 0x03 / 0x04

Serial number (as ASCII) 0001 0x00 Firmware version 0009 0x08 Sensor Name 0010 0x09

1) Register number starts from 1.

2) Protocol address starts from 0.

3) 1xx is scale. E.g. for 100, reading of 2550 is equivalent to 25.5. For 50, reading of 2550 is equivalent to 51.

4) For Modbus protocol settings see Application Note Modbus AN0103 (available on www.epluse.com/EE872).

Modbus Register Map

The measured data is saved as a 32 bit float and as 16 bit signed integer:

FLOAT 32 bit

Parameter Unit Register number1) [DEC] Protocol Address2) [HEX]

Read register: function code 0x03 / 0x04

CO2 (average) ppm 1061 0x424 CO2 (raw) ppm 1063 0x426 Pressure p* mbar 1201 0x4B0 Pressure p* psi 1203 0x4B2 Relative humidity RH** % 1021 0x3FC Temperature T** ° C 1003 0x3EA Temperature T** ° F 1005 0x3EC Temperature T** K 1009 0x3F0 Dew point temperature Td*** ° C 1105 0x450 Dew point temperature Td*** ° F 1107 0x452 Dew point temperature Td*** K 1147 0x47A

INTEGER 16 bit

Parameter Unit Scale3)Register number1) [DEC] Protocol Address2) [HEX]

Read register: function code 0x03 / 0x04

CO2 (average) ppm 1 4031 0xFBE CO2 (raw) ppm 1 4032 0xFBF Pressure p* mbar 10 4101 0x1004 Pressure p* psi 100 4102 0x1005 Relative humidity RH** % 100 4011 0xFAA Temperature T** ° C 100 4002 0xFA1 Temperature T** ° F 50 4003 0xFA2 Temperature T** K 50 4005 0xFA4 Dew point temperature Td*** ° C 100 4053 0xFD4 Dew point temperature Td*** ° F 100 4054 0xFD5 Dew point temperature Td*** K 100 4074 0xFE9

*available for versions M13, M15 **available for version M13 only when probe is not heated (default setting)

***available for version M13 always: enabling or disabling the probe heating does not a󰀨ect the Td measurement

1) Register number starts from 1.

2) Protocol address starts from 0.

3) 1xx is scale. E.g. for 100, reading of 2550 is equivalent to 25.5. For 50, reading of 2550 is equivalent to 51.

4) For Modbus protocol settings see Application Note Modbus AN0103 (available on www.epluse.com/EE872).

INFORMATION

E+E Elektronik Ges.m.b.H. Langwiesen 7 • A-4209 Engerwitzdorf Tel: +43 7235 605-0 • Fax: +43 7235 605-8 info@epluse.com • www.epluse.com

LG Linz Fn 165761 t • UID-Nr. ATU44043101 Place of Jurisdiction: A-4020 Linz • DVR0962759

+43 7235 605 0 / info@epluse.com

BA_EE872_short // v1.1 // Technische Änderungen vorbehalten // 194837