Release - Siemens OP5 Equipment Manual

Controlling the OP from the PLC
At most, the activation of two simultaneously pressed keys can be trans-
ferred.
System keyboard
A bit is permanently assigned to every key on the system key board – apart
image from the arrow keys and the directory key – in the data area for system key-
board bits. The bit remains set for as long as the corresponding key is
pressed. The bit is reset when you release the key.
Owing to the evaluation of this data area, the operator's attention can be
drawn to the wrong operation of a key – for example, by means of an error
message.
Date and time
Transfer of date and time can be initiated from the OP by means of a PLC job
in order to synchronize the OP and PLC.
PLC OP
By creating a suitable data area, it is possible for alarm messages to be ac-
acknowledgment knowledged by the PLC instead of on the OP.
area
OP PLC If the PLC is required to announce that an alarm message has been acknowl-
acknowledgment
edged, this can be done following creation of a suitable data area.
area
13-2
Manual OP5, OP15
( ) J31069-D0840-U001-A2-7618