Siemens SINUMERIK 840Di sl Function Manual page 91

12/2008
Notice
PLC data source:
By default, PLC addresses are restricted to the address range of the smallest
PLC.
To remove this restriction if you are using a more powerful PLC and want to use
the addresses in ePS, you must increase the corresponding values in the trigger
DB (DB239 in ePS Standard) in DW8 for inputs, DW10 for outputs, DW12 for bit
memory, DW14 for timers, and DW16 for counters to the available address
ranges. You must then restart the PC on which the ePS client is installed.
Warning
PLC data source:
Using the trigger DB with an increased address range can cause the PLC to shut
down when the higher addresses are used in ePS configurations if this address
range is not actually available to the connected PLC.
Using (a) control monitor(s) to execute the variable monitor
The "Trigger variable monitor(s)" diagnostic action is used to detect the PLC
variable values promptly and store them on the ePS server. It is only possible to
access the data manually via the machine events or variable monitor data series.
Limit value triggers can be used to react automatically to the variable values via
control monitors.
See also:
•
3.4.1 Control monitors – List view
•
3.3.16 Diagnostic actions
© Siemens AG 2008 All Rights Reserved
ePS Network Services, Function Manual (FH) - Release 12/2008
3 Setting up functions
3.1 Maintenance
3-91