BusWorks® Model 989EN U
ser’s Manual Modbus TCP/IP Digital I/O & Counters
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Acromag, Inc. Tel:248-295-0880 Fax:248-624-9234 Email:
2
IMPORTANT SAFETY CONSIDERATIONS
You must consider the possible negative effects of power, component,
wiring, sensor, or software failure in the design of any type of monitoring or
control system. This is very important where property loss or human life is
involved. It is important that you perform satisfactory overall system design
and it is agreed between you and Acromag, that this is your responsibility.
GETTING STARTED
MOUNTING AND DIMENSIONS……………………………..
3
CONTROLS & INDICATORS..………………………………..
3
ISOLATION BARRIERS..……………………………………...
3
CONNECTIONS………………………………………………...
4
DIN-
Rail Mounting And Removal…………………….
4
Network…………………………………………………...
4
Power……………………………………………………...
6
Excitation…………………………………………..........
7
Earth Ground..
………………………………….……….
7
Digital Inputs…………………………………………….
7
Digital Outputs..…………………………………………
11
WEB BROWSER………………………………………...........
14
Home Page………………………………………………
14
Password Configuration Page.………………..........
15
Network Configuration Page………………………….
16
I/O Configuration P
age..……………………………….
18
I/O Configuration Page Help…………………………..
18
Test Page…………………………………………………
22
Counter Configuration Page………………………….
23
Counter Test Page………………………………………
26
Utility Page……………………………………………….
27
I/O Self Test
Help………………………………………..
29
TROUBLESHOOTING…………………………………………
29
Diagnostics Table……………………………..………..
29
Getting Out Of Trouble…………………………………
32
Trouble Browsing Your Module?.............................
32
TECHNICAL REFERENCE
KEY FEATURES………………………………………………..
33
HOW IT WORKS………….…………………………………….
34
ABOUT MODBUS TCP/IP….…………………………………
36
IP Addressing…………..……………………………….
38
Dynamic Host Configuration Protocol………………
39
Domain Name System (DNS)………………………….
40
MODBUS REGISTERS………………………………………..
40
Register
Functions……………………………………..
40
Register Mirroring……….……………………………...
41
Data Types……………………………………………….
42
Register Map……………………………………………..
43
SPECIFICATIONS……………………………………………...
56
Model Numbers….………………………………………
56
Digital Inputs…………………....……………………….
56
Digital Outputs………………..…………………………
58
General Specifications…………………………………
59
Enclosure and Physical………………………………..
59
Agency Approvals…..…………………………………..
60
Environmental…………………………………………...
60
Ethernet Interface……………………………………….
61
Controls &
Indicators…………………………………..
61
ACCESSORY CABLES……..…………………………………
62
Patch Cable & Crossover Cable………………………
63
REVISION HISTORY…………………………………………..
65
TABLE OF
CONTENTS
Symbols on equipment:
Means “Refer to User’s
Manual (this manual) for
additional information”.
The information of this manual
may change without notice.
Acromag makes no warranty
of any kind with regard to this
material, including, but not
limited to, the implied
warranties of merchantability
and fitness for a particular
purpose. Further, Acromag
assumes no responsibility for
any errors that may appear in
this manual and makes no
commitment to update, or
keep current, the information
contained in this manual. No
part of this manual may be
copied or reproduced in any
form without the prior written
consent of Acromag, Inc.
For additional information,
please visit our web site at
download our whitepaper 8500-
765, Introduction to Modbus
TCP/IP, or 8500-648,
Introduction to Modbus.
This product is compatible
with Internet Explorer 7 and
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Corporation.
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