Ethernet I/O Modules
ICP DAS CO., LTD.
PETL/tET/tPET DIO Series User Manual, Ver. 2.2, Aug. 2017, Page: 83
6.
Modbus Information
The PETL/tET/tPET series is a family of
IP-based Modbus I/O devices that
allow you to remotely control DI/DO
terminals via an Ethernet connection
and uses a master-slave
communication technique in which
only one device (the master) can
initiate a transaction (called queries),
while other devices (slaves) respond
by either supplying the requested
data to the master, or by taking the
action requested in the query.
Most SCADA (Supervisory Control and
Data Acquisition) and HMI software,
such as Citect (Schneider Electric),
ICONICS, iFIX, InduSoft, Intouch,
Entivity Studio, Entivity Live, Entivity
VLC, Trace Mode, Wizcon (ElUTIONS), and Wonderware, etc. can be used to easily integrate serial
devices via the Modbus protocol.
Modbus/TCP master applications can also be developed using any programming language, such as VB,
C# and so on.
ICP DAS provides the Modbus SDK that allows development of Modbus applications on a PC.
The relevant demo programs and SDK can be obtained from the following locations:
VB Demo
：
http://ftp.icpdas.com/pub/cd/6000cd/napdos/et7000/demo/pc_client/
.Net demo and SDK
：
http://ftp.icpdas.com/pub/cd/8000cd/napdos/modbus/nmodbus/
