Siemens S7-200 - Page 121

Operating Your Text Display (TD) Device
5.6 Performing Typical or Routine Operator Tasks
Text Display (TD) User Manual
System Manual, 08/2008, A5E00765548-03
121
Table 5- 2 Error Messages Relating to the Status of the S7-200 CPU
Type Message Description
Program Checksum Error Hardware failure (S7-200 CPU)
Compare Contact User program error: Illegal Compare contact
EEPROM/Permanent Memory Failure Hardware failure (S7-200 CPU)
Memory Cartridge Failure Memory cartridge failure
Scan Watchdog Timeout Hardware failure (S7-200 CPU)
Fatal
Unknown Error XXXX
(where XXXX = the error number)1
CPU failure (S7-200 CPU)
Non-
Fatal
I/O Error Mod X
(where X = the number of the I/O
module)
An expansion module encountered an I/O error.
If there are multiple failures, the TD device
displays this message multiple times one time for
each failed module.
Runtime Error XXXX
(where XXXX = the error number)
1
The S7-200 CPU encountered an error while
executing the user program, such as:
 Indirect addressing
 HSC setup and execution errors
 Attempting to execute an illegal instruction
(ENI, DISI, or HDEF) inside an interrupt routine
 Subroutine nesting errors
 TODW data errors
 Simultaneous Transmit (XMT) and Receive
(RCV) errors
1
Refer to the SIMATIC S7-200 Programmable Logic Controller System Manual for information about
specific errors.
Setting Time and Date in the S7-200 CPU
You can use the TD device to change the time-of-day settings in the S7-200 CPU. This
allows an operator to easily adjust for time changes.
The TD device does not maintain time and date settings. In order to display the time and
date values, the TD device reads the current time and date from the S7-200 CPU and
displays these values. The operator can then use this screen to edit these values and then
write the new time and date settings back to the S7-200 CPU.
Tip
The TD device does not validate the time, date or day of the week values that you enter. You
can inadvertently write an incorrect date or day of the week to the S7-200 CPU.
To allow an operator to change the time and date settings in the S7-200 CPU:
● You must have enabled (selected) the time-of-day (TOD) option when you configured the
TD device with the Text Display wizard. Refer to Chapter 4.
● The S7-200 CPU must support the TOD clock
Tip
If you configured a password for the TD device, the operator must enter the password before
being allowed to set the time and date.