OM640 - KM640
The OM640 Operator Panel is a low cost/high performance man/machine interface with a broad range of operator  input and display capabilities.  The terminal includes a 4  line by 20 character LCD display, five function keys, 3 LED light bar indicator lamps, and the capability to display text messages, BCD, BCD Double, Binary and Floating Point numbers.

OptiMate® configuration software allows you to predefine up to 160 messages.  These messages can be later  selected by your PLC or computer program to display status, variable data and allow numeric data input. For computer applications, additional messages can be sent directly over the serial communication port.

Function keys and indicator lamps can be custom labeled by the user with  plastic inserts.  The inserts can be custom legended with text and/or graphics, and slipped into protective pockets behind the faceplate.

The OM640 Operator Terminal is part of Optimation's OptiMate® series.  Each OptiMate® module is designed to connect to a microprocessor or to most PLC's with a single cable connection.  OptiMate® modules can be used individually, or together with any combination of other OptiMate® modules.

When used with a microprocessor system, simple communications over either an RS232 or RS422 communications cable allows the microprocessor to directly control the lights and LCD display as well as to read function key status.

When used with a PLC, operation is transparent to the user.  Terminal functions tie directly into your PLC ladder logic program.  The OM640 takes care of the rest.

4 line x 20 character backlit LCD display
3 LED light bar indicator lamps
5 tactile snap pushbuttons - independently configurable for momentary or alternate action mode
User-Legendable function keys and indicator lamps
160 User-definable messages
Stand alone capability with direct connection to most PLCs
Compatible with any computer via serial communications
Mix and match with other OptiMate® modules

Eliminates the need for controller I/O modules for operator panel use
Easy function selection, display and status indication in one module
Reduces system integration and retrofit costs
Remove and replace maintainability
Rapid future expansion
Reduced maintenance costs
Attractive, eye-appealing appearance

Operational Overview
The OM640 Panel incorporates all of the basic elements necessary for operator interface. Function keys allow operator function selection, and the alphanumeric display provides text information.

The OM640 interfaces over either an RS232 or RS422 serial link to any computer-based system and many popular PLCs.  In a computer-based system, interface occurs via a very easy to use OptiMate® Hex protocol.  For a  PLC-based system, operation is totally controlled through a bank of 14 PLC registers.  Everything else is handled by the OM640 terminal.

PLC - Based Systems
PLC-based systems access the OM640 via a bank of 14 registers.   Buttons appear as coils and contacts (or register bits) in the PLC.  Messages can be predefined, stored in the OM640 and used by the PLC program.  To use a  predefined message, your PLC program simply places the message number that you have associated with the message into a PLC register.  Text,  data display,  and arrow adjustment messages are all available.  Up to 160 messages can be predefined.

There are three types of messages that handle numeric values.  A data display  message will display the value you place in  the line's data register in the message field that has been predefined.  The top display line on the right illustrates a data display message.  The message has been predefined  as message # 6.  The carets(^) in the message are place holders for the numeric display.  To use the message to display data, simply place the value '6' in the top line message select register and the value (in this case, 64197324) in the top line data register(s).  The OM640 takes care of the rest.

Use with a Computer
The OM640 Panel provides all of the same capabilities to a computer-based system that it does to PLC systems.  It also  provides the added capability to utilize additional messages that are not predefined, but passed over the serial link.  The OptiMate® Hex protocol makes computer-based applications a very simple undertaking. To control the lamps or LCD display, simply send the appropriate message over the serial link.  Upon receiving the appropriate message, the OM640 will respond with the button status.


Recessed Mount Housing 6.6"L x 4.0"H x 1.25"D
Cutout size for above 3.55"Hx5.80"L
Panel Fasteners : Four, 6x32 threaded studs, shown above (on ends, symmetrical about center line)
Weight : 12 ounces
Color: Dark gray housing. 
Function keys : White with user-supplied label
Lamp colors available: Red, Green, Yellow
LCD display :  4 line x 20 character STN with LED backlight 
character size : 4.75mm high x 2.95mm wide
Button Type : Membrane panel with dome switch snap action

Power (all lamps on) : 8 -30VDC @2.04Watts
170 mA @ 12VDC 85mA @ 24VDC
Power connector : Pluggable terminal block, 2 position

RS232 and RS422 ; 4800 to 19200 baud
Compatible with most major PLC protocols
Hex Slave Protocol for computer-based systems
15 pin female 'D' shell connector

Enclosure   - NEMA 4 (installed)
Temperature   - 0 to 50 C
Humidity   - 95% Non-condensing

Labeling of  Function Keys
User-defined slide-in Labels

Message Types  (160 user-defined messages available)
General Text message
Data display message (one data value per line)

Numeric Types & Values
Fixed Point
BCD (Values between 0 & 9999; with appropriate decimal placement)
BCD Double (values between 0 & 99999999 with appropriate decimal placement)
Binary (Values between 0 & 65535 with appropriate decimal placement) 
Floating Point (Values between -3.402823E+38 to +3.402823E+38 in the format of ±X.XXE±XX)

OM640 - Module with Dark Gray enclosure. Please note that each PLC has a different suffix according to the following table.

Allen Bradley
Automation Direct
GE Fanuc
OptiMate Hex