Siemens SIMATIC HMI OP3 User Manual

11-6
Operator Panel OP3
Edition 11/99
11.4 System Keyboard Assignment
Create a data area for your system keyboard on the PLC. When you press a
key, the corresponding bit is set in the keyboard assignment. The bit is set for
as long as the corresponding key is pressed. Releasing the key resets the bit.
By an evaluation of this area, the operator’s attention can be drawn, for
example, by means of an event message to incorrect operation of a key.
If the data area for system keyboard bits is to be used, it must be specified
during configuration as the area pointer and created on the PLC. The system
keyboard assignment is a data area having a fixed length of two data words.
Figure 11-6 shows its configuration for an OP3.
Keyboard group bit
1st data word
2nd data word
+/–
.
SHIFT
7
894
5
6123
0
76543210
Bit number
76543210
Figure 11-6 Keyboard Assignment for the OP3
The keyboard assignment is transferred spontaneously to the PLC whenever a
modification is registered on the OP3. There is therefore no need to configure
a polling time.
The keyboard group bit is used as a check bit. It is set to 1 every time the
keyboard assignment is transferred from the OP3 to the PLC and should be
reset after the data area has been evaluated by the application program.
Regular reading of the group bit makes it possible to ascertain in the user’s
program whether the system keyboard assignment has been transferred again.
Application
Configuring
system keyboard
assignment
Process-Dependent Operator Guidance

Siemens SIMATIC HMI OP3 Specifications

General

Touchscreen	No
Power Supply	24 V DC
Protection Class	IP65
Weight	0.5 kg
Display Type	LCD
Keys	Function keys
Communication Ports	RS-232
Operating Temperature	0 to 50 °C

Summary

Part I Introduction

1 Product Description

Provides information about the OP3's functionality and operating capabilities.

2 Functionality

Details the features and capabilities of the OP3 device.

Part II Functions of the OP3

3 General Operation

Explains how to operate the OP3 using its keyboard and keypad.

4 Using the OP3 with Its Standard Functions

Describes how to utilize the standard functions and screens of the OP3.

5 Screens

Details the OP3's screen display, components, and management.

6 Password Protection

Covers methods for preventing unauthorized access using passwords and levels.

7 Messages

Explains the display and handling of event and system messages on the OP3.

8 Timers and Counters

Describes how to access and use timers and counters via the OP3.

9 STATUS VAR and FORCE VAR Functions with the OP3

Explains how to view and modify PLC operands using OP3 functions.

10 System Settings on Standard Screens

Details how to configure system settings like language, date, and time.

11 Process-Dependent Operator Guidance

Covers configuring soft keys and screen hierarchies for guided operation.

12 Communication

Explains how to connect the OP3 to SIMATIC S7 automation systems.

Part III Installation and Commissioning

13 Installation

Provides instructions for physically installing the OP3 unit.

14 Commissioning

Details the steps for initial setup and putting the OP3 into operation.

Part IV Device Description, Test and Monitoring Functions

15 Device Description

Covers the physical dimensions and connection elements of the OP3.

16 Test and Monitoring Functions

Explains how to perform hardware tests and monitor OP3 functions.

Part V Appendices

A Brief Description of Standard Screens

Provides an overview of standard screens, their functions, and password levels.

B System Messages

Lists and explains system messages, their causes, and actions.

C Technical Data

Lists the technical specifications and parameters of the OP3 device.

D ESD Guidelines

Details precautions for handling electrostatically sensitive devices.

E SIMATIC HMI Documentation

Outlines the structure and components of SIMATIC HMI documentation.