MDT AMI series Technical Manual page 17

Technical Manual Switch Actuators AMI/AMS
The blocking function gets active, when the corresponding communication object becomes a logical
"1". By sending a logical "0", the blocking function can be deactivated again.
The parameter "Behavior when locked" defines an action for the output at activating the blocking
process. There are the setting on, off and no change available. The same settings are also available
for the "Behavior when unlocked". This action is called when the blocking function is deactivated
again.
The following chart shows the corresponding communication object:
Number Name
2 Block
Table 14: Communication object blocking function
The following diagram describes the blocking process. For the "Behavior when locked", the action on
was parameterized and for the "Behavior when unlocked" the action off was parameterized:
The KNX telegram shows which values are send to the blocking object. By sending a logical "1", the
blocking function is activated and the channel is switched on. The blocking function is deactivated
again by sending a logical "0". So the channel is switched off.
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Length Usage
1 Bit blocks the channel