MODBUS Master/Slave GPRS UDP Communication

MODBUS Master/Slave GPRS UDP Communication
Product Data Sheet
MODBUS Master/Slave GPRS UDP Communication
The Klinkmann Automation MODBUS Master/Slave GPRS UDP Communication Server
(Modbus GPRS IO Server) is a Microsoft Windows application program that acts as a
communication protocol Server and allows other Windows application programs access to data from
MODBUS network using the UDP/IP interface (in UDP Server mode only), with special functionality
implemented to support the GPRS wireless communications. The Server can act either as a
MODBUS master device or a MODBUS slave device.
Any Microsoft Windows program that is capable of acting as a DDE, FastDDE, SuiteLink or OPC Client
may use the MODBUS Master/Slave Server.
There are following MODBUS Master/Slave GPRS UDP Server versions available:
- MODBUS Master/Slave GPRS UDP DDE & Suite Link Server,
- MODBUS Master/Slave OPC & DDE Server.
The OPC support for MODBUS Master/Slave Serial&Ethernet Server OPC & DDE version conforms to
OPC Data Access Custom Interface Specification 2.04. The MODBUS Server OPC & DDE version is
tested for compliance and is compatible with OPC Foundation OPC Data Access Compliance Test
The MODBUS Server DDE & Suite Link version supports the Wonderware Suite Link communication
Supports the special UDP Modbus/IP + CRC feature, the serial device is accessed via GPRSmodem with embedded application running on it. Both the 6-bytes header and CRC are included in
UDP/IP packet. The Klinkmann GPRS application running on GPRS-modem at serial device side is
required to enable the GPRS communication.
The Server is intended for serial communication with any devices supporting standard MODBUS
binary (RTU, 8-bit) protocol. Connected Modbus devices can be either MODBUS Slaves or MODBUS
For write commands the selection from two different function types can be done: single coil/register
write commands (functions 5 and 6) or multiple coil/register write commands (functions 15 and 16).
Supports both 5-digit and 6-digit addressing.
Support for PLC limited address fields, by using special valid addresses ASCII file.
Modbus Function 8 (Diagnostics) support.
Minimizes system message traffic by dynamically calculating and optimizing poll lists for clientrequested items/points.
Supports multiple topics for each PLC, allowing different data update rates.
Provides a communication status flag for each topic.
Supports standard DDE among multiple applications.
Hardware: For effective use the following is recommended - CPU: 586 133 MHz or faster, 32MB
RAM or more. May require more memory to run other Windows programs simultaneously.
Software: MS Windows XP, Windows 2003 Server, Windows 7, Windows 2008 Server, Windows
2012 Server.
Maximum Connections: Up to 255 Modbus devices can be connected.
Devices Supported: Any device supporting MODBUS RTU (binary) serial protocol.
Accessible Data Types: Within the MODBUS Master/Slave Server, the standard Modicon MODBUS
protocol item/point naming is used. The point name consists of five or six digits with optionally used
suffix (e.g. character S or s for signed Word indication). The first digit states the memory area the
point belongs to. The rest four or five digits are the point address in the memory area.
There are following memory areas available (5-digit / 6-digit addressing):
Binary outputs and binary memories, Read/Write, addresses 00001 - 09999 / 000001 - 065535
Binary inputs, Read Only, addresses 10001 - 19999 / 100001 - 165535
Register outputs and register memories, Read/Write, addresses 40001 - 65000 / 400001 - 465535
Register inputs, Read Only, addresses 30001 - 39999 / 300001 - 365535
Extended Memory Registers, addresses 600001 - 69xxxx
Description / Order Number
MODBUS Master/Slave GPRS UDP DDE&Suite Link Server Manual & Disk Set / DR381 10
MODBUS Master/Slave GPRS UDP OPC&DDE Server Manual & Disk Set / DR381 11
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