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BC7300
Beckhoff BC7300 Manuals
Manuals and User Guides for Beckhoff BC7300. We have
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Beckhoff BC7300 manual available for free PDF download: Manual
Beckhoff BC7300 Manual (48 pages)
MODBUS Bus Terminal Controller
Brand:
Beckhoff
| Category:
Controller
| Size: 0.6 MB
Table of Contents
Table of Contents
3
1 Foreword
5
Notes on the Documentation
5
Liability Conditions
5
Delivery Conditions
5
Copyright
5
Safety Instructions
6
State at Delivery
6
Description of Safety Symbols
6
2 Basic Principles
7
Device Description of the BC7300
7
The Beckhoff Bus Terminal System
7
The Interfaces
9
Electrical Power Supply
9
Power Contacts Feeding Points
9
Power Contacts
9
Fieldbus Connection
9
Configuration and Programming Interface
10
KS2000 Software
10
Twincat BC
10
K-Bus Contacts
10
Electrical Isolation
10
Operating Modes of the Bus Terminal Controller
11
Mechanical Structure
11
Technical Data
14
Peripheral Data in the Process Image
15
Start-Up Procedure and Diagnostics
16
Fieldbus Errors
18
3 Modbus
19
Basic Principles
19
Bus Topology
19
Process Data and Memory Map
20
MODBUS Process Image
22
BC7300 Process Image
22
Assignment of the Bus Terminals
23
Setting and Parameterisation of the MODBUS
24
Parameterisation Table
25
The MODBUS Protocol
26
Ascii
26
Rtu
26
Functions
27
Read Digital Outputs (Function 1)
27
Read Digital Inputs (Function 2)
28
Read Analog In/Outputs (Function 3)
28
Read Analog Inputs (Function 4)
29
Writing a Digital Output (Function 5)
30
Writing an Analog Output (Function 6)
30
Writing a Number of Digital Outputs (Function 15)
31
Writing a Number of Analog Outputs (Function 16)
32
Writing and Reading Analog Outputs and Inputs
33
(Function 23)
33
Echoes a Query (Sub-Function 0)
35
Bus Coupler Reset (Sub-Function 1)
35
Delete All Counter Contents (Sub-Function 10)
35
Bus Communication Error Counter (Sub-Function 11)
35
Error Answer Counter (Sub-Function 13)
35
Slave Answers (Sub-Function 14)
36
Unsent Slave Answers (Sub-Function 15)
36
Number of Error Answers (Sub-Function 16)
36
BC7300 Error Answers
37
4 Bus Terminal Controller
38
PLC Cycle Time
38
PLC Variables
38
Remanent Variables
38
Persistent Data
39
Allocated Flags Area
40
5 Appendix
41
MODBUS Interface
41
Mapping the Bus Terminals
42
List of References
42
Firmware
42
Table
42
Example Program
43
Explanation of the Program
43
The Program in the Bus Terminal Controller
43
Creating the BOOT Program
44
MODBUS Communication
44
6 Questions and Answers
46
General
46
No Communication with the BC7300
46
Mapping of the Digital and the Byte-Oriented Bus Terminals Onto a Fixed Address
46
Drop of the Digital Outputs
46
7 Index
47
8 Support and Service
48
Beckhoff's Branch Offices and Representatives
48
Beckhoff Headquarters
48
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