Seneca T201DCH100-MU, User Manual

Page: 3 / 26

User Manual
T201DCH50/100/300/600-MU
ALL RIGHTS RESERVED. NO PART OF THIS PUBLICATION MAY
BE REPRODUCED WITHOUT PRIOR PERMISSION.
www.seneca.it
Doc. MI00546-EN
Rev.2 Page 3
TABLE OF CONTENTS
DEVICE DESCRIPTION AND INTENDED USE ........................................................... 4 1.
1.1. Description ..............................................................................................................................................................................4
1.2. Features ...................................................................................................................................................................................4
CONFIGURING THE DEVICE ...................................................................................... 5 2.
DIP SWITCH CONFIGURATION .................................................................................. 6 3.
3.1. Loading configuration from flash ..........................................................................................................................................6
3.2. Setting the RS485 Modbus RTU Station Address ................................................................................................................6
3.3. Setting the RS485 Baud rate ..................................................................................................................................................7
3.4. Setting the RMS/Bipolar mode and 50% - 100% full scale ..................................................................................................7
MODBUS RTU PROTOCOL ......................................................................................... 9 4.
4.1. Modbus RTU function code supported .................................................................................................................................9
MODBUS REGISTER TABLE .................................................................................... 10 5.
5.1. "0-BASED" OR "1-BASED” MODBUS ADDRESSES ..........................................................................................................11
5.1.1. MODBUS ADDRESSES WITH "0-BASED" CONVENTION..........................................................................................12
5.1.2. MODBUS ADDRESSES WITH "1 BASED" CONVENTION (STANDARD)...................................................................12
5.2. BIT CONVENTION WITHIN A MODBUS HOLDING REGISTER ..........................................................................................13
5.3. MSB and LSB BYTE CONVENTION WITHIN A MODBUS HOLDING REGISTER ..............................................................13
5.4. REPRESENTATION OF A 32-BIT VALUE IN TWO CONSECUTIVE MODBUS HOLDING REGISTERS ...........................13
5.5. TYPE OF 32-BIT FLOATING POINT DATA (IEEE 754) ........................................................................................................14
5.6. T201DCH-MU: MODBUS 4xxxx HOLDING REGISTERS TABLE (FUNCTION CODE 3) ....................................................15
FULL CONFIGURATION WITH EASY SETUP .......................................................... 20 6.
6.1. Easy Setup Menu ..................................................................................................................................................................20
6.2. Creating a Project Configuration .........................................................................................................................................21
6.3. Testing the Device ................................................................................................................................................................25
6.3.1. The datalogger ..............................................................................................................................................................25