Interactive SourceMeter® Instrument Reference Manual Section 3:
2450-901-01 Rev. B/September 2013 3-121
Master and subordinates
In a TSP-Link
®
system, one of the nodes (instruments) is the master node and the other nodes are
the subordinate nodes. The master node in a TSP-Link
®
system can control the other nodes
(subordinates) in the system.
When any node transitions from local operation to remote operation, it becomes the master of the
system. All other nodes also transition to remote operation and become its subordinates. When any
node transitions from remote operation to local, all other nodes also transition to local operation, and
the master/subordinate relationship between nodes is dissolved.
A TSP-Link system can be stand-alone or computer-based.
In a stand-alone system, scripts are loaded into the instruments. You can run a script from the front
panel of any instrument (node) connected to the system. When a script is run, all nodes in the system
go into remote operation. When the script is finished running, all the nodes in the system return to
local operation, and the master/subordinate relationship between nodes is dissolved.
In a computer-based system, you can use a computer and a remote interface to communicate with a
single node in the system. This node becomes the interface to the entire system. When a command
is sent through this node, all nodes go into remote operation. The node that receives the command
becomes the master and can control all of the other nodes, which become its subordinates. In a
computer-based system, the master/subordinate relationship between nodes can only be dissolved
by performing an abort operation. For more information about remote interfaces, see
Remote
communication interfaces (on page 2-44).
Initializing the TSP-Link system
TSP-Link
®
system must be initialized after configuration changes. Changes that require you to
initialize the system include:
• Turning off power or rebooting any instrument in the system
• Changing node numbers on any instrument in the system
• Rearranging or disconnecting the TSP-Link cable connections between instruments
If initialization is not successful, you can check the event log to check for error messages that indicate
the problem. Some typical problems include:
• Two or more instruments in the system have the same node number
• There are no other instruments connected to the instrument performing the initialization
• One or more of the instruments in the system is turned off
• The actual number of nodes is less than the expected number
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