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Thiết bị và giao thức PROFIBUS

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Giới thiệu giao thức Profibus

PROFIBUS (Process Field Bus) is a standard for fieldbus communication in automation technology and was first promoted (1989) by BMBF (German department of education and research). It is the world’s most successful fieldbus, with more than 31 million devices installed by the end of 2009. Over 5.4 million of these were in the process industries.

There are two variations of PROFIBUS in use today. The most commonly used PROFIBUS DP, and the lesser used PROFIBUS PA.

PROFIBUS DP (Decentralized Peripherals)

It is used to operate sensors and actuators via a centralized controller in production (factory) automation applications.

PROFIBUS PA (Process Automation)

It is used to monitor measuring equipment via a process control system in process automation applications. This variant is designed for use in explosion/hazardous areas.

ICP DAS has been developing various PROFIBUS DP Slave products for several years. We offer converters, gateways, and remote I/O to our customers, and help them to solve technology problems.

PROFIBUS DP Introdution

PROFIBUS DP is the main emphasis for factory automation, it uses RS-485 transmission technology. DP is the simple, fast, cyclic and deterministic process data exchange between a bus master and the assigned slave devices. The original version, designated DP-V0, has been expanded to include version DP-V1, offering acyclic data exchange between master and slave. A further version DP-V2 is also available, which provides for direct slave to slave communication with an isochronous bus cycle.

Class 1 Master

  • A central programmable controller (PLC)
  • Exchanges I/O data with connected slaves
  • Determines the baud rate (slaves auto-detect this rate)
  • Manages the token transfer between masters. Detects another master during the gap time

Class 2 Master

  • Diagnostic, configuration, or startup tool (laptop、PC、programming console)
  • Can only control one slave at a time
  • Does not have write-access to the slave
  • Does not have a GSD file

Slave

  • A passive station which can only respond per a master request and acknowledge messages. A slave has no bus control rights
  • The GSD file defines the slave for the master

OSI Model

GSD

GSD is a readable ASCII text file and contains both general and device-specific specifications for communication. Each of the entries describes a feature that is supported by a device. A configuration tool reads the device identification, the adjustable parameters, the corresponding data type and the permitted limit value for the configuration of the device from GSD.

Features:

  • Baudrate up to 12 Mbit/s
  • Maximum 244 bytes input and 244 bytes output per slave
  • Fast Cyclic data communication between master and slave
  • Slave confi guration and parameters are set from the master side by GSD file
  • Allow Multi-master system
  • 124 slaves can be put in Data Exchange
  • 32 stations on one segment
Baudrate
(Kbit/s)
9.6 19.2 45.45 93.75 187.5 500 1500 3000 6000 12000
Segment Length
(m)
1200 1200 1200 1200 1000 400 200 100 100 100

Bộ chuyển đổi và lặp tín hiệu Profibus

The PROFIBUS repeater is used to solve the issues of the PROFIBUS segment, transmission distance and disturbance when setting up a PROFIBUS network. If it is necessary to integrate the different communication interface, the PROFIBUS converter is helpful. The application architectures as following figures provide the examples to show when and how to apply these products.

Converter & Repeater
Model Description
I-7550-B

PROFIBUS to RS-232/422/485 Converter (Plastic Case)
I-7550-M

PROFIBUS to RS-232/422/485 Converter (Metal Case)
I-7550E

PROFIBUS to Ethernet Converter (Plastic Case)
I-7550E-M

PROFIBUS to Ethernet Converter (Metal Case)
PROFI-2510

Isolated PROFIBUS Repeater
PROFI-2541

PROFIBUS DP to Multi-mode Fiber Converter (ST-Type)
PROFI-2541-SC

PROFIBUS DP to Multi-mode Fiber Converter (SC-Type)
PROFI-2542

PROFIBUS to Single-mode Fiber Converter (ST type)
PROFI-2542-SC

PROFIBUS to Single-mode Fiber Converter (SC type)

 

Model Name I-7550-B I-7550E PROFI-2510 PROFI-2541 PROFI-2541-SC PROFI-2542 PROFI-2542-SC
I-7550-M I-7550E-M
Description PROFIBUS to RS-232/422/485 Converter PROFIBUS to Ethernet Converter Isolated PROFIBUS Repeater PROFIBUS to Fiber Converter
PROFIBUS Channel 1 2 1
PROFIBUS Baud Rate (bps) 9.6 k ~ 12 M 9.6 k ~ 3 M 9.6 k ~ 12 M
PROFIBUS Protocol DP-V0 Slave DP-V0/DP-V1/DP-V2
PROFIBUS Address 0~126 set by DIP switch
PROFIBUS Transmission
Distance (m)
Depend on baud rate
COM 1 RS-232/RS-485/ RS-422 RS-232
COM 1 Baud Rate (bps) 1.2 K ~ 115.2 K 115.2 K
Fiber Channel 1
Fiber Connector ST (Multi-mode) SC (Multi-mode) ST (Multi-mode) SC (Single-mode)
Fiber Transmission Distance (m) 1.4 km Max.
(in 62.5/125 μm fiber cable)
10 km (in 9/125 um fiber cable)
Ethernet Speed 10/100M
Ethernet Protocol TCP/UDP
Server/Client

Bộ chuyển đổi giao thức Gateway Profibus

Model Description
GW-7552-B

PROFIBUS to Modbus Gateway (Plastic Case)
GW-7552-M

PROFIBUS to Modbus Gateway (Metal Case)
GW-7553-B

PROFIBUS to Modbus TCP Gateway (Plastic Case)
GW-7553-M

PROFIBUS to Modbus TCP Gateway (Metal Case)
GW-7553-CPM

PROFIBUS to CANopen Gateway (Plastic Case)
GW-7553-CPM-M

PROFIBUS to CANopen Gateway (Metal Case)
GW-7557-B

PROFIBUS to HART Gateway (Plastic Case)
GW-7557-M

PROFIBUS to HART Gateway (Metal Case)

Remote I/O Module Profibus

Model Analog Input Modules
Module Name PROFI-5017

PROFI-5017C

PROFI-5018/S

8-Ch Voltage Input Module 8-Ch Current Input Module 10-Ch Thermocouple Input Module
Channels 8 8 10
Wiring Differential Differential Differential
Individual Channel Yes Yes Yes
Sensor Type Thermocouple
(J, K, T, E. R. S, B, N, C)
Voltage Input Range ±10 V, ±5 V, ±2.5 V, ±1.25 V ±15 mV, ±50 mV, ±100 mV, ±500 mV,
±1 V, ±2.5 V,
Current Input Range 0 ~ 20 mA ±20 mA, 0 ~ 20 mA, 4 ~ 20 mA
(Required External 125 Ω Resistor)
Resolution 14-bit 14-bit 16-bit
Sampling Rate 10 Hz 10 Hz 10 Hz
Accuracy ±0.1% of FSR ±0.2% of FSR ±0.1% of FSR

 

Model Analog Output Modules
Module Name PROFI-5024

4-Ch Voltage/Current Output Module
Channels 4
Wiring Differential
Voltage Output Range ±10 V
Current Output Range 0 ~ 20 mA, 4 ~ 20 mA
Resolution 14-bit
Accuracy For Voltage Output ±0.1% of FSR
For Current Output ±0.2% of FSR
Isolation 3750 Vrms

 

Model Digital I/O Modules
Module Name PROFI-5045

PROFI-5050

PROFI-5051

PROFI-5052

PROFI-5053

PROFI-5055

PROFI-5060

DI
Channels 16 24 12 24 8 8
Isolation Voltage 3750 Vrms 5000 Vrms 3750 Vrms 3750 Vrms
Contact Dry Wet Wet Dry Wet Wet
Sink/Source (NPN/PNP) Sink/Source Sink/Source Sink/Source Sink/Source Sink/Source
ON Voltage Level +4 ~ +30 VDC +10 ~ +50 VDC +4 ~ +30 VDC Open +10 ~ +50 VDC +4 ~ +30 VDC
OFF Voltage Level +1 VDC Max. +4 VDC Max. +1 VDC Max. Close to IN.GND +4 VDC Max. +1 VDC Max.
Input Impedance 10 KΩ 3 KΩ 10 KΩ 3 KΩ
DO
Channels 24 8 8 4
Isolation Voltage 3750 Vrms 3750 Vrms
Type Open Collector Open Collector Open Collector Relay (Form C)
Sink/Source (NPN/PNP) Sink Sink Sink
Load Voltage +10 ~ +40 VDC +10 ~ +30 VDC +10 ~ +40 VDC  30 VDC / 125 VAC
Max. Load Current 650mA/channel 30 mA/channel 650 mA/channel 0.6A@125VAC, 2A@30VDC

Remote I/O Unit Profibus

The PROFI-8×55 Remote I/O Unit is designed for the slave device of PROFIBUS DP protocol. It supports up to 1/2/4/8 slots for ICPDAS I-8k, I-87k series I/O modules. In addition, we also provide hot-swap function for I-87k High Profi les series I/O modules. To setup network, users can choose and configure I/O modules by using the GSD file without any other setting.

Features:

  • Detect transmission Rate Automatically (Max.12 Mbps)
  • Support Device-Related & Channel-Related Diagnosis
  • Address 0 ~ 126 Set by Rotary Switches or SSA-Telegram
  • Support Hot-Swap for I-87K High-Profile I/O Modules
  • 3000 VDC Isolation Protection on PROFIBUS side
  • 1/2/4/8 I/O Slots for I-87K and I-8K Series I/O Modules
  • 4 KV ESD Protection (contacting for any terminal)
  • Operating Temperature: -25 ~ +75°C

Modules Support

Type Module Name
DI I-8040 / I-8051 / I-8052 / I-8053 / I-8058
I-87040 / I-87051 / I-87052 / I-87053 / I-87058
I-87040W / I-87046W / I-87051W / I-87052W / I-87053W / I-87053W-A5 / I-87058W / I-87059W
DO I-8037 / I-8041 / I-8056 / I-8057 / I-8060 / I-8064 / I-8065 / I-8066 / I-8068 / I-8069
I-87041 / I-87057 / I-87064 / I-87065 / I-87066 / I-87068 / I-87069
I-87041W / I-87057W / I-87064W / I-87065W / I-87066W / I-87068W / I-87069W
DI/O I-8042 / I-8050 / I-8054 / I-8055 / I-8063 / I-8077
I-87054 / I-87055 / I-87061W / I-87063
I-87054W / I-87055W / I-87063W
AI I-8017H / I-8017HS
I-87013 / I-87017 / I-87018
I-87013W / I-87015W / I-87017W / I-87017W-A5 / I-87017RW / I-87017RCW / I-87018RW /I-87018ZW / I-87019RW
AO I-8024
I-87022 / I-87024 / I-87026
I-87024W / I-87028CW
Counter/Frequency I-8080
I-87082
I-87082W
Motion I-8093W

 

Model Description
PROFI-8155-G

PROFIBUS Remote I/O Unit with 1 I/O Slot
PROFI-8255-G

PROFIBUS Remote I/O Unit with 2 I/O Slot
PROFI-8455-G

PROFIBUS Remote I/O Unit with 4 I/O Slot
PROFI-8855-G

PROFIBUS Remote I/O Unit with 8 I/O Slot

Phụ kiện Profibus

Model Description
CNT-PROFI

PROFIBUS Connector
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