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Configuring a switch for Node Control:
User is responsible for selecting which features shall be locked when a node is not in
control. This is done by adding the ER flag to the switches for these features - see Loop
Detail.
Node states
Nodes in the system can be in one of the following three states:
Idle: This is the state a node goes into after Network Restart or when it is initially powered
on. This state indicates that no node is currently in control. Control will be granted to the
first node that requests it.
Not in control: This state indicates that a remote node is currently in control. Events
generated by all switches with the ER flag set will generate the error message: “Switch
Disabled. Node Control Required.” on the LCD display where the button was pressed and
cause no other effect on the panel.
In control: This node owns control. Access to all features and manual control switches is
granted.
Note: There is a timer that is started with every request for control. When it expires the
request for control is canceled if it has not been granted before the timer expires. The
duration of this timer is set by the user with the “Node Ctrl request timeout (Secs)” variable
in the Timers section of the Job Details. Default value is 30 seconds.
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