English (GB)
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2. Introduction
2.1 About this functional profile
This functional profile describes the following modules and units:
• CIU 202 Modbus RTU
• CIU 262 Modbus 3G/4G cellular
• CIU 502 Modbus ethernet for Modbus TCP
This functional profile applies to the following Grundfos products:
• DP, EF, SL1, SLV and SEG AUTO
ADAPT
wastewater pumps.
Grundfos cannot be held responsible for any problems caused
directly or indirectly by using information in this functional profile.
2.2 Assumptions
This functional profile assumes that the reader is familiar with the
commissioning and programming of Modbus devices. The reader
should also have some basic knowledge of the Modbus protocol
and technical specifications.
It is also assumed that an existing Modbus network with a
Modbus master is present.
2.3 Definitions and abbreviations
You cannot order CIU 502 separately.
Order a CIU 902 box unit and a CIM 500 module to
install in the CIU 902 box.
3G
Third-generation mobile telephony network.
4G
Fourth-generation mobile telephony network.
ARP
Address Resolution Protocol. Translates IP
addresses into MAC addresses.
Auto-MDIX
Ensures that both crossover cable types and
non-crossover cable types can be used.
CAT5
Ethernet cable type with four twisted pairs of
wires.
CAT5e
Enhanced CAT5 cable with better
performance.
CAT6
Ethernet cable compatible with CAT5 and
CAT5e and with very high performance.
CIM
Communication Interface Module.
CIU
Communication Interface Unit.
CRC
Cyclic Redundancy Check. A data error
detection method.
DHCP
Dynamic Host Configuration Protocol. Used
to configure network devices so that they
can communicate on an IP network.
DNS
Domain Name System. Used to resolve host
names to IP addresses.
GENIbus
Proprietary Grundfos fieldbus standard.
GENIpro
Proprietary Grundfos fieldbus protocol.
Grundfos GO
Remote
A Grundfos application designed to control
Grundfos products via infrared or radio
communication. Available for iOS and
Android devices.
H
Head (pressure).
HTTP
Hyper Text Transfer Protocol. The protocol
commonly used to navigate the world wide
web.
IANA
Internet Assigned Numbers Authority.
IP
Internet Protocol.
LED
Light-Emitting Diode.
MAC
Media Access Control. Unique network
address for a piece of hardware.
Modbus
A serial communications protocol commonly
used in industry and building automation
systems.
Modbus RTU
Modbus is a fieldbus used worldwide. The
RTU version is used for wired networks, CIM
200, and for call-up connections over
telephone networks, CIM 260.
Modbus TCP
Modbus is a fieldbus used worldwide. The
TCP version is adapted for use as an
application protocol on TCP/IP using either
CIM 260 3G/4G celluar or CIM 500 ethernet
as basis.
PIN
Personal Identification Number. For SIM
cards.
Ping
Packet InterNet Groper. A software utility
that tests the connectivity between two TCP/
IP hosts.
PUK
Personal Unblocking Key (SIM cards).
Q
Flow rate.
SELV
Separated or Safety Extra-Low Voltage.
SELV-E
Separated or Safety Extra-Low Voltage with
earth connection.
SIM
Subscriber Identity Module. SIM card.
SMA
SubMiniature version A. Coaxial radio signal
cable connection standard.
SMTP
Simple Mail Transfer Protocol.
SNTP
Simple Network Time Protocol. Used for
clocks synchronization between computer
systems.
TCP
Transmission Control Protocol. Protocol for
Internet communication and Industrial
ethernet communication.
TCP/IP
Transmission Control Protocol/Internet
Protocol. Protocol for Internet
communication.
Transmission
speed
Bits transferred per second, bits/s.
URL
Uniform Resource Locator. The IP address
used to connect to a server.
UTC
Coordinated Universal Time. The primary
time standard by which the world regulates
clocks and time.
UTF-8
Unicode Transformation Format. Character
encoding.
VPN
Virtual Private Network.
A network using the Internet to connect
nodes. These systems use encryption and
other security mechanisms to ensure that
only authorised users can access the
network and that the data cannot be
intercepted.
