IDEC WindMSG - Manual (Page 5)

3.1 Introduction
HG1X is an Operator Interface for PLCs. It communicates with a PLC
over its serial port to get the information required by the operator.
Information could be the value of a PLC register or the status of a
PLC coil. This information is displayed on the LCD display of HG1X. If
required, HG1X can also change the values of PLC registers / coils.
3.2 Application - Tags, Screens, Keys and Tasks
Microsoft Windows ® based configuration software, WindMSG, helps
user to configure HG1X unit. ‘Configuration’ means making the HG1X
unit work as per the system requirements, Eg. HG1X can be
configured to be used with any PLC, display any register data,
perform any action using a key. The complete configuration for a unit
is termed as ‘Application’. Application comprises of Tag Data base,
Screens, Key Definitions, Alarms and Tasks.
Each register in the PLC memory has a unique address and can be
identified by giving a specific name to it. This information is stored as
Tag Data Base in HG1X. Any coil or register to be used in the
application must be first defined in the Tag data base.
LCD display on each unit displays the PLC data on a ‘Screen’.
Screen size varies with HG1X model. PLC data can be arranged on a
screen using different objects.
Operator can control the process by actually changing the value of
PLC registers. This is possible with the help of the keys. Different
tasks can be assigned to keys on the HG1X keypad.
Any register can be constantly monitored if alarms are defined for it.
When alarm condition is reached, the respective alarm is displayed
on the screen.
Getting Started
In this chapter....
Introduction
Application - Tags, Screens, Keys and Tasks
PLC communication