Siemens SIMATIC HMI OP3 User Manual

12-7
Operator Panel OP3
Edition 11/99
12.3.3 Time and Date
The current time and date are stored by the S7 program in bytes n+15 to
n+17 and n+21 to n+24. This means that the OP3 can synchronize the time
and date with the S7.
Bytes n+15 to n+17 contain the current time of the S7 in BCD. The
illustration shows the structure of the data byte.
Hour (0 to 23)
n+15
Address
Minute (0 to 59)
n+16
n+17
Second (0 to 59)
0
7
Bytes n+21 to n+24 contain the current date of the S7 in BCD. The
illustration shows the structure of the data byte.
Day of week (1 to 7)
Day of month (1 to 31)
Month (1 to 12)
Year (0 to 99)
n+21
Address
n+22
n+23
0
7
n+24
Synchronization of the OP3 and the SIMATIC S7 is performed in three steps:
1. Every hour, the OP3 sets bit 2 in data byte n+0 to 1.
2. As soon as the S7 program resets the bit, the OP3 detects that the S7
program has stored up-to-date values for the time and date in the interface
area.
3. The OP3 reads the up-to-date data from data bytes n+15 to n+17 and
n+21 to n+24 of the interface area.
Purpose
Bytes
n+15 to n+17:
Time
Bytes
n+21 to n+24:
Date
Synchronization
with the S7
Communication

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.