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106
SC
Initiate scan process.
Description
SCnn
Syntax
Remarks
This command is used to initiate scan of controllers on RS-485 network. When a master
controller receives this command, it scans the RS-485 network for all the slave controllers
connected to it.
If nn = 0, the master controller scans the network but does not resolve any address conflicts.
If nn = 1, the master controller scans the network and resolves address conflicts, if any. This
option preserves the non-conflicting addresses and reassigns the conflicting addresses starting
with the lowest available address. For example, during an initial scan, if the master controller
determines that there are unique controllers at addresses 1,2, and 7 and more than one
controller at address 23, this option will reassign only the controllers with address conflict at 23;
the controllers with addresses 1,2, and 7 will remain untouched. In this case, after conflict
resolution, the final controller addresses might be 1,2,3,7, and 23 if the master determines that
there are two (2) controllers initially at address 23.
If nn = 2, the master controller reassigns the addresses of all controllers on the network in a
sequential order starting with master controller set to address 1. In the example mentioned
above, after reassignment of addresses, the final controller addresses will be 1,2,3,4, and 5.
Argument
nn
SC0
Example
SA, SC?, SD?
See Also
Value
Description
Integer
Scan option. Valid values between 0 and 2.
(scan the RS-485 network but do not any address conflicts)
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