Sentera Controls MODBUS RTU Installation Manual Download Page 1 | Manualshive

Page: 1 / 12

background image

24 VDC + Modbus RTU

24 VDC + Modbus RTU

24 VDC + Modbus RTU

Installation guide

Modbus RTU

1
2
3
...
»

Summary of Contents for MODBUS RTU

Page 1: ...24 VDC Modbus RTU 24 VDC Modbus RTU 24 VDC Modbus RTU Installation guide Modbus RTU ...

Page 2: ... MODBUS RTU EN 000 13 12 2019 2 12 Table of contents SAFETY AND PRECAUTIONS 3 DESCRIPTION 4 HOW IT WORKS 4 POWER OVER MODBUS SUPPLY PoM 5 DATA TRANSMISSION 7 MODIFY OR MONITOR PARAMETERS 10 INSTALLATION GUIDE MODBUS RTU ...

Page 3: ...k environment is as dry as possible avoid condensation All installations shall comply with local health and safety regulations and local electrical standards and approved codes This product can only be installed by an engineer or a technician who has expert knowledge of the product and safety precautions Avoid contacts with energised electrical parts Always disconnect the power supply before conne...

Page 4: ...247 The Master can also write information to the Slaves The official Modbus specification can be found at http www modbus org ATTENTION Each Modbus RTU network requires one master and one or multiple slave devices The slave devices send information to the master device HOW IT WORKS Modbus is transmitted over serial lines between devices The simplest setup would be a single serial cable connecting ...

Page 5: ...TU communication and 24 VDC power supply are distributed via one Unshielded Twisted Pair UTP network cable with RJ45 connectors Fig 3 RJ45 cable B A GND 24 VDC 8 mm 8 mm 8 mm 8 mm RJ45 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 ATTENTION Do not directly connect the PoM cable to the Ethernet port of a computer Larger networks containing many devices should be split into different segments For each segment the...

Page 6: ...s RTU A and B DIG M RCMFM 2R The maximum current capacity of an RJ45 connector is limited to 1 5 A Make sure that the sum of the maximum current consumption of all devices in one segment does not exceed 1 5 A If necessary create an extra segment by adding another DPOM power supply In most cases the power supply will be the limiting factor The DPOM power supply has a maximum current capacity of 840...

Page 7: ... Sentera PoM devices with 24 VDC power supply require RJ45 connectors Sentera PoM Devices with 3 3 VDC power supply require RJ12 connectors DATA TRANSMISSION In order to optimise the transmission of data via Modbus RTU the installer should pay extra attention to following points Cable length There are limitations to the total cable length on a Modbus RTU network When the total cable length becomes...

Page 8: ...Network cables ATTENTION Do not route the fieldbus wires close to power lines or wires leading to heavy loads Keep at least 15 cm distance between the sensor lines and the 230 VAC power lines Apart from wiring it is essential also to separate or maintain enough distance between more sensitive devices as sensors distribution boxes HVAC controllers and power devices like frequency inverters contacto...

Page 9: ...on cable Data In Out Data Out In A B GND 24 VDC M products Sentera products feature M series that can be connected via an RJ45 connector This will provide the best results for data transmission In case devices with terminal blocks are used route the wires close to the devices separating the twisted wires only for the shortest possible distance needed for inserting them into the screw terminals NBT...

Page 10: ...e The 3SModbus software was designed to activate NBT to adjust the Modbus RTU address or to monitor or adjust other parameters of a Sentera device The 3SModbus software is free and can be downloaded via our website https www sentera eu en 3SMCenter and installed on your computer The Modbus to USB converter CNVT USB RS485 allows you to connect a Sentera device to the USB port of your computer and t...

Page 11: ... about the Modbus input and holding registers can be found in the mounting instruction of every Sentera product with Modbus RTU communication INPUT REGISTERS The input registers are read only All data can be read using the Read Input Registers command HOLDING REGISTERS These registers are read write registers and they can be managed via Read Holding Registers Write Single Register and Write Multip...

Page 12: ... MODBUS RTU EN 000 13 12 2019 12 12 back to the table of contents Fig 12 3SMobdus application Input and Holding registers Fig 13 3SMobdus application example of modifying a Holding registers INSTALLATION GUIDE MODBUS RTU ...

Reviews:

No comments

Related manuals for MODBUS RTU

Brand: EAW Pages: 10

Brand: mikroElektronika Pages: 3

AT-9424Ts/XP AC

Brand: Allied Telesis Pages: 3

LoadMaster 1500

Brand: KEMP Technologies Pages: 71

Brand: Measurement Computing Pages: 27

Brand: Eaton Pages: 14

Brand: Kontron Pages: 98

Brand: Acorn Computers Limited Pages: 2

Brand: sound4 Pages: 66

Bolide BN-NVR/NX

Brand: GSA Pages: 101

Brand: KYLAND Technology Pages: 19

AH10EN-5A Series

Brand: Delta Pages: 132

Brand: BinTec Pages: 2

Brand: El.Mo Pages: 16

Brand: Tripp Lite Pages: 3

Brand: Aztech Pages: 13

Brand: Airaya Pages: 28

Brand: Omnia Pages: 130

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands