Siemens SIMATIC BATCH Operating Manual page 435

Additional status identifiers - locks
The write lock is set when a BATCH client is currently making online parameter changes or
inputting information in operator dialogs. The start lock is set when the PLC block signals the
LOCK flag. If both locks are set, the write lock is displayed (priority: write lock before start lock).
Additional status identifiers - operator prompts
A white exclamation mark on a round blue background is shown for all operator prompts in the
current batch in the BCC.
Double-click on the icon or open the control recipe. The following three operator prompts can
be shown in a control recipe element:
SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA
BATCH Control Center
9.8 Batch control
435