2
Original installation and operating instructions.
CONTENTS
Page
1. Symbols used in this document
2. Introduction
2.1 About this functional profile
This functional profile describes the CIU 250 (GSM/GPRS
Communication Interface Unit 250) for the Grundfos MP 204
motor protector.
In the following, the CIU 250 is referred to as "communication
interface".
The data in this document are subject to change without prior
notice. 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
commissioning and programming Modbus devices. The reader
should also have some basic knowledge of the Modbus protocol
and technical specifications.
It is also assumed that an existing GSM/GPRS network with
a Modbus master is present.
2.3 Definitions and abbreviations
CIM configuration register block
Alarm simulation register block
GSM call-up connection to SCADA system
Call-up functional description
Modbus GSM/GPRS communication faults
Grundfos alarm and warning codes
Modbus telegrams and function codes
11.2 Read holding registers (0x03)
11.3 Read input registers (0x04)
11.4 Write single register (0x06)
11.5 Write multiple registers (0x10)
11.7 Diagnostics register interpretation
12.1 Diagnostics: return query data
12.2 Reading the CIM configuration register block
Caution
If these safety instructions are not observed,
it may result in malfunction or damage to the
equipment!
Note
Notes or instructions that make the job easier
and ensure safe operation.
0b
Prefix "0b" indicates a binary number.
0x
Prefix "0x" indicates a hexadecimal
number.
APN
Access Point Name.
Name used to identify a GPRS service
in the GSM mobile network.
CIM 250
Grundfos GSM Communication Interface
Module (built into the CIU 250).
CIU 250
Grundfos GSM/GPRS Communication
Interface Unit.
CRC
Cyclic Redundancy Check.
A data error detection method.
CSD
Circuit Switched Data.
Connection is established via a fixed
connection (a physical circuit or
a reserved data channel).
GENIbus
Proprietary Grundfos fieldbus standard.
GPRS
General Packet Radio Service.
TCP/IP networking via GSM network.
GRE
Generic Routing Encapsulation.
A tunnelling protocol that can
encapsulate a TCP packet type inside
IP address tunnels, creating a virtual
point-to-point link between routers at
remote points over the internet.
GSM
Global System for Mobile
communications.
LAN
Local Area Network.
LED
Light-Emitting Diode.
Modbus RTU
Modbus is a fieldbus used worldwide.
The RTU version is used for wired
networks and for call-up connections
over telephone networks.
Modbus TCP
Modbus is a fieldbus used worldwide.
The TCP version is adapted for use as
an application protocol on TCP/IP.
MP 204
Grundfos Motor Protector.
PIN
Personal Identification Number
(SIM cards).
PUK
Personal Unblocking Key (SIM cards).
