8.16
Diagnostics for the time of day
Overview
Diagnostics for
Diagnostics tool
Called via
AS-CPU time
SIMATIC Manager (Page 128) Select CPU: PLC > Set Time of Day
AS-CPU time
Module Information (Page 131) Station > Open Online
Select CPU: PLC > Set Time of Day
PC time
Control Panel > Clock, Language and Region >
Date and Time. Do not change these settings.
Activated time services
Windows System Utilities
Control Panel > System and Security > Admin‐
istrative Tools > Services"Windows timer"
Synchronization status on the terminal
bus
In the Start menu, Siemens SIMATIC programs:
SIMATIC NET > Set PG/PC Interface
Select interface > Click "Diagnostics" > In the
"Time" group
Configuration of time displayed in oper‐
ator control and monitoring systems
WinCC Editor "Time Synchroni‐
zation"
Open WinCC Explorer with the menu command
Editors > Time Synchronization > Open
8.17
Diagnostics for hardware displays
Overview
Many components have displays indicating the component status and errors. Analyzing these
displays enables you to obtain information without intervening in the system.
Components
You can find information about diagnostic options in the following manuals and
sections:
Power supply module Reference manual
SIMATIC;
S7-400 Programmable Controller; Module Specifications
● Backup battery (optional)
● Error messages by means of LED displays
● Operator control and display elements
Central module for
S7-400
CPU
Reference manual
SIMATIC;
S7-400 Programmable Controller; CPU Specifications
● Monitoring functions of the CPU
● Status and error displays
● Operating mode switch
CP 441
Manual
SIMATIC;
CP 441 Point-to-Point Communication - Installation and Parameter Assign‐
ment
● Diagnostics for CP 441
CP 443-1
Device manual
S7 CPs/Part B4;
Description of CP 443-1
● Displays and operating mode switch
Diagnostics in PCS 7
8.17 Diagnostics for hardware displays
Service Support and Diagnostics (V8.2)
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Service Manual, 03/2016, A5E36200111-AA
