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CONTENTS
1.
2.
2.1
3.
3.1
3.2
3.3
3.4
3.5
4.
5.
6.
7.
7.1
8.
Warning
Prior to installation, read these
installation and operating instructions.
Installation and operation must comply
with local regulations and accepted
codes of good practice.
1. Symbols used in this document
Warning
If these safety instructions are not
observed, it may result in personal
injury!
If these safety instructions are not
observed, it may result in malfunction
Caution
or damage to the equipment!
Notes or instructions that make the job
Note
easier and ensure safe operation.
2. Applications
The CIM 2XX Modbus module (CIM =
Communication Interface Module), which is a
Modbus slave, enables data transmission between
a Modbus RTU network and a Grundfos product.
The CIM 2XX is fitted in the product to be
communicated with or in a CIU 2XX unit (CIU =
Communication Interface Unit).
Retrofitting of the CIM 2XX is described in the
installation and operating instructions of the
Grundfos product.
Further information
For further information about configuration and
functionality of the CIM 2XX, see the specific
functional profile on the CD-ROM supplied with the
product.
6
2.1 CIM 2XX Modbus module
Page
6
6
6
7
7
7
8
8
8
9
10
11
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1 2 3
Fig. 1
CIM 2XX Modbus module
Pos. Designation
1
D1
2
D0
3
Common/GND
4
5
6
7
LED2
8
9
SW7
8
9
4
5
6
7
Description
Modbus terminal D1
(positive data signal)
Modbus terminal D0
(negative data signal)
Modbus terminal
Common/GND
On/off switches for
termination resistor
Switches for selection of
Modbus parity and
transmission speed
Red/green status LED for
Modbus communication
Red/green status LED for
internal communication
between the CIM 2XX and
the Grundfos product
Hex switch for setting the
Modbus address
(four most significant bits)
Hex switch for setting the
Modbus address
(four least significant bits)
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