Chapter 1: Overview
7
Communications
RS232
The controller comprises 2 COM ports. These may be used to download programs from a PC,
or to establish communications with devices using the RS232 protocol.
CANbus
The controller comprises 1 port for CANbus networking purposes.
Additional communication port
Optional communication channel; note that certain models comprise a RS485 or Ethernet port.
Information regarding other communication options can be obtained from your distributor.
Programming
Vision OPLC programs comprise both PLC and HMI applications. Both applications are
programmed on a PC using VisiLogic software.
PLC Application
The PLC application enables Vision to perform automation tasks. V230/260/280 models have
an application memory of up to 1000K. VisiLogic enables the programmer to:
• Build the PLC application using click-and-drop Ladder elements and functions.
• Create a modular program, comprised of separate subroutines that can be called into the
PLC application at any time.
HMI Application
The HMI application customizes the operator interface. Use it to:
• Assign functions to the keyboard keys, touchscreen objects (V280 only) and enable the
operator to enter data via the controller keyboard.
• Create and display text, graphic images, and variable system data on the controller’s
screen in response to run-time conditions.
A HMI application can typically comprise up to 255 Displays. Each Display can include text,
graphic images, and variables.
Variables allow you to display system data on the controller’s LCD screen: bit, integer, and
timer values, times and dates, I/O status and values, and text from the variable text display list.
Variables can also use a graphic image or a bar graph to represent a value or range of values.
Typically, 12 fonts in a variety of languages may be installed and used in text messages.
When the VisiLogic program is complete, the programmer downloads it into the controller.
The data types in the tables below can be used in your applications.
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