Siemens CP 1243-1 Operating Instructions Manual page 62

Configuration
4.8 Partner stations
CP diagnostics
With the parameter group, you have the option of reading out advanced diagnostics data
from the CP using PLC tags.
● Enable advanced CP diagnostics
Enable the option to be able to use advanced CP diagnostics.
If the option is enabled, at least the "Diagnostics trigger tag" must be configured.
The following PLC tags for the individual items of diagnostics data can be enabled
selectively.
● Diagnostics trigger tag
If the PLC tag (BOOL) from the user program of the CPU is set to 1, the CP updates the
values of the PLC tags that can then be configured for the advanced diagnostics.
After writing the current values to the following PLC tags, the CP sets the "Diagnostics
trigger tag" to 0 signaling the CPU that the updated values can be read from the PLC
tags.
Note
Fast setting of the diagnostics trigger variable
Triggers must not be set faster than a minimum interval of 500 milliseconds.
● Frame memory overflow
PLC tag (data type byte) for the send buffer overflow pre-warning. Bit 0 is set to 1 when
80% of the fill level of the send buffer is reached.
● Frame memory size
PLC tag (data type DWord) for the occupation of the send buffer. The number of saved
frames is displayed.
● Date of last successful logon to TCSB
Only for the TeleControl Basic protocol
PLC tag (data type DTL) for the date on which the CP last logged in to the telecontrol
server.
● Date of last unsuccessful logon to TCSB
Only for the TeleControl Basic protocol
PLC tag (data type DTL) for the date on which the CP was last unable to log in to the
telecontrol server.
● TeleService status
The PLC tag (BOOL) indicates whether a TeleService session is active.
– 0 = No TeleService session active
– 1 = TeleService session active
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Operating Instructions, 04/2017, C79000-G8976-C365-03
CP 1243-1