Modular I/O System
MODBUS
Manual
Technical description, installation and configuration
750-138 Version 2.3.0
ii • General
Copyright ã 1997-2001 by WAGO Kontakttechnik GmbH All rights reserved.
WAGO Kontakttechnik GmbH
Hansastraße 27
D-32423 Minden
Phone: |
+49 (0) |
571/8 87 |
– 0 |
Fax: |
+49 (0) |
571/8 87 |
– 1 69 |
E-Mail: info@wago.com
Web: http://www.wago.com
Technical Support
Phone: |
+49 (0) 571/8 87 – 5 55 |
Fax: |
+49 (0) 571/8 87 – 4 30 |
E-Mail: |
support@wago.com |
Every conceivable measure has been taken to ensure the correctness and completeness of this documentation. However, as errors can never be fully excluded we would appreciate any information or ideas at any time.
We wish to point out that the software and hardware terms as well as the trademarks of companies used and/or mentioned in the present manual are generally trademark or patent protected.
Modular I/O System
MODBUS
TABLE OF CONTENTS • iii
TABLE OF CONTENTS
Section 1: Explanations
Section 2: System Description MODBUS, Configuration,
Initial Starting, Diagnosis
Section 3: Digital Inputs
750-400, 750-401, 750-402, 750-403, 750-405, 750-406, 750-410, 750-411, 750-408, 750-409, 750-412, 750-413, 750-414, 750-415 750-404
Section 4: Digital Outputs
750-501, 750-502, 750-504, 750-516, 750-519 750-506 750-509 750-511
750-512, 750-513, 750-514, 750-517
Section 5: Analog Inputs
750-452, 750-454, 750-482, 750-484 750-456, 750-461, 750-481 750-462, 750-469
750-465, 750-466, 750-486, 750-467, 750-468, 750-487, 750-488 750-472, 750-474 750-476, 750-478
Section 6: Analog Outputs
750-550, 750-580
750-552, 750-554, 750-584
750-556
Section 7: Endand Supply Terminal Blocks
750-600, 750-614, 750-616 750-601, 750-602, 750-609, 750-610, 750-611, 750-612, 750-613, 750-615 750-622
Section 8: SSI Encoder Interface, Quadrature Encoder Interface
750-630, 750-631
Section 9: RS232, TTY, RS485
750-650, 750-651, 750-653
Section 0: Application in Explosive Environments
Modular I/O System
MODBUS
iv • Notes
Modular I/O System
MODBUS
Ensure that the following explanations are observed
To assure a quick installation and start up of the units described in this manual ensure that the following information and explanations are carefully read and adhered to.
Description of the symbols used
The ATTENTION symbol refers to
a)incorrect handling which can result in damage or destruction to the hardware or software
b)possible injuries to persons when operating with dangerous peripheral process units.
The FINGER symbol describes routines or gives suggestions for the efficient use of the unit and optimisation of the software.
яюэьыъщэш The FUNCTION symbol refers to framework conditions which guarantee fault free operation. Ensure that this information is adhered to.
The QUESTION MARK is intended to clarify terminology.
The BOOK symbol refers to additional literature, manuals data sheets and web addresses.
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Legal stipulations
This manual including all of its illustrations is copyrighted, deviations from the copyright stipulations are strictly prohibited. Reproduction, translation as well as electronic and photographic archiving or changes require the written approval of WAGO Kontakttechnik GmbH. Non observance will result in claims for damage.
WAGO Kontakttechnik GmbH reserves all rights for changes or amendments which serve technical progress. All rights for the issuing of patents or the protection of registered designs are reserved by WAGO Kontakttechnik GmbH. Products of other suppliers are always referred to without reference to patent rights. For this reason the existence of such rights cannot be excluded.
The use of the product described in this manual is solely intended for qualified persons trained in PLC programming, qualified electricians or persons instructed by qualified electricians who are also familiar with the applicable standards and directives. WAGO Kontakttechnik GmbH declines all liability for faulty operation and damages to WAGO products and products from other suppliers resulting from non-observance of the information contained in this manual.
The components are delivered ex works with a defined hardware and software configuration for each case of application. Changes are only permitted within the framework of the possibilities outlined in the manuals. All other changes or modifications to the hardware or software as well as the use of the components not conforming with that intended will result in the exclusion from any liability on the part of WAGO Kontakttechnik GmbH.
Please contact WAGO Kontakttechnik GmbH if a modified hardware or software configuration is required.
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List of contents for register 2 |
|
|
1 |
WAGO-I/O SYSTEM ................................................................. |
1 |
1.1 |
Components .................................................................................................. |
1 |
1.2 |
Installation.................................................................................................... |
2 |
1.3 |
Methods of decentralisation ........................................................................ |
6 |
2 |
MODBUS Coupler/Controller................................................... |
9 |
2.1 |
Hardware...................................................................................................... |
9 |
2.2 |
Power supply ................................................................................................ |
10 |
2.2.1 |
Electronic supply voltage............................................................................... |
11 |
2.2.2 |
Supply voltage of the field side...................................................................... |
12 |
2.3 |
Station address ............................................................................................. |
13 |
2.4 |
Mode switch.................................................................................................. |
14 |
2.5 |
Fieldbus connection ..................................................................................... |
15 |
2.5.1 |
RS 485............................................................................................................ |
15 |
2.5.2 |
RS 232............................................................................................................ |
18 |
3 |
Technical data ............................................................................. |
19 |
3.1 |
Dimensions.................................................................................................... |
19 |
3.2 |
Coupler ......................................................................................................... |
20 |
3.3 |
Controller ..................................................................................................... |
21 |
4 |
MODBUS ..................................................................................... |
23 |
5 |
Configuration .............................................................................. |
25 |
5.1 |
Coupler ......................................................................................................... |
25 |
5.1.1 |
Settings........................................................................................................... |
25 |
5.1.1.1 |
Standard settings ............................................................................................ |
26 |
5.1.1.2 |
Baud rate setting ............................................................................................ |
26 |
5.1.1.3 |
Error detection, length of the character string................................................ |
27 |
5.1.1.4 |
End of Frame Time ........................................................................................ |
28 |
5.1.1.5 |
ASCII-/RTU mode......................................................................................... |
28 |
5.1.1.6 |
Error Check.................................................................................................... |
29 |
5.1.1.7 |
Extended Functions........................................................................................ |
29 |
5.1.1.8 |
Watchdog ....................................................................................................... |
30 |
5.1.1.9 |
Update Firmware ........................................................................................... |
30 |
5.1.2 |
Data exchange between MODBUS master and I/O modules ........................ |
31 |
5.1.3 |
Addressing the I/O modules........................................................................... |
32 |
5.1.4 |
Application examples .................................................................................... |
33 |
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5.2 |
Controller ..................................................................................................... |
35 |
5.2.1 |
Settings .......................................................................................................... |
35 |
5.2.1.1 |
Standard settings............................................................................................ |
36 |
5.2.1.2 |
Baud rate setting ............................................................................................ |
36 |
5.2.1.3 |
Error detection, length of character string ..................................................... |
37 |
5.2.1.4 |
End of Frame Time........................................................................................ |
38 |
5.2.1.5 |
ASCII-/RTU mode......................................................................................... |
38 |
5.2.1.6 |
Error Check.................................................................................................... |
39 |
5.2.1.7 |
Extended Functions ....................................................................................... |
39 |
5.2.1.8 |
Watchdog....................................................................................................... |
40 |
5.2.2 |
Data exchange between MODBUS master and controller ............................ |
41 |
5.2.2.1 |
Data exchange between MODBUS master and I/O modules ........................ |
42 |
5.2.2.2 |
Data exchange between MODBUS master and PLC functionality ............... |
44 |
5.2.2.3 |
Data exchange between I/O modules and PLC functionality ........................ |
45 |
5.2.2.4 |
Address review .............................................................................................. |
46 |
5.2.3 |
Absolute addresses for inputs, outputs and flags........................................... |
47 |
5.2.4 |
Addressing the I/O modules .......................................................................... |
49 |
5.2.5 |
Application example...................................................................................... |
50 |
5.2.6 |
Controller operating system........................................................................... |
52 |
5.3 |
Common coupler/controller functions....................................................... |
53 |
5.3.1 |
Implemented MODBUS functions ................................................................ |
53 |
5.3.1.1 |
Use of the MODBUS functions..................................................................... |
54 |
5.3.1.2 |
Read Coil Status ............................................................................................ |
55 |
5.3.1.3 |
Read Input Status........................................................................................... |
57 |
5.3.1.4 |
Read Holding Register................................................................................... |
59 |
5.3.1.5 |
Read Input Register ....................................................................................... |
60 |
5.3.1.6 |
Force Single Coil ........................................................................................... |
61 |
5.3.1.7 |
Preset Single Register .................................................................................... |
62 |
5.3.1.8 |
Fetch Comm Event Counter .......................................................................... |
63 |
5.3.1.9 |
Force Multiple Coils...................................................................................... |
64 |
5.3.1.10 |
Preset Multiple Registers............................................................................... |
65 |
5.3.2 |
Watchdog - Fieldbus failure .......................................................................... |
66 |
5.3.3 |
Configuration function .................................................................................. |
70 |
5.3.4 |
Firmware information.................................................................................... |
71 |
5.3.5 |
General registers ............................................................................................ |
72 |
6 |
Start up and Diagnosis ............................................................... |
73 |
6.1 |
Run up and error indications ..................................................................... |
73 |
6.2 |
MODBUS LED ............................................................................................ |
75 |
6.3 |
Starting up the controller with WAGO-I/O-PRO .................................... |
76 |
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7 |
General Conditions.................................................................... |
79 |
7.1 |
Transport and storage conditions ............................................................. |
79 |
7.2 |
Climatic conditions ..................................................................................... |
79 |
7.3 |
Mechanical conditions ................................................................................ |
80 |
7.4 |
Class and degree of protection................................................................... |
81 |
7.5 |
Specifications and test results .................................................................... |
81 |
7.6 |
Electromagnetic compatibility ................................................................... |
82 |
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