The following system limits apply to Windows-based systems:
 

	xP270	xP277, Mobile Panel277	MP370	PC
Number of logs	20	20	50	100
Number of loggable tags per log	20	20	50	100
Number of log segments	400	400	400	400
Entries per log *)	10,000	10,000	50,000	500,000

^*) Note for CE devices (xP 270, xP 277, MP 370, Mobile Panel 277): The operator panels are primarily not designed for logging data cyclically, they are more intended for logging acyclic error states (e.g. fault alarms and process signals). Operator panels are not designed for extensive logging tasks with large volumes of data or with high performance requirements.

Info, tips and examples of logging

Info:
Maximum write access to CF /MMC/SD cards and USB sticks.
Please note that CF/MMC/SD cards and USB sticks currently only allow a maximum guarantee of 100,000 write accesses (for CF cards) to 1,000,000 (for USB sticks). The specified maximum number of write accesses might vary from manufacturer to manufacturer and change in the course of time.