Vishay Micro-Measurements System 7000 Programmer’s Reference Manual
Page 36 of 142
System Initialization
At initialization you must defined each scanner's role in the network.
1. A scanner may be a simple member of a network, in which case it is required to be attached
to a "master" scanner via its sync cable.
2. A scanner may be a member of a network and be defined as the "master". A master scanner
is attached via sync cables to other scanners and is responsible for controlling
synchronization. There may only be one master in a network.
3. A scanner may also be configured as not belonging to a network. These independent (non-
networked) scanners will not be synchronized or share global limits with other scanners.
LabVIEW Configure Scanner Network Configuration VI
Active X SetScannerNetworkConfiguration method
Low-level Define Scanner’s Network Configuration command
You should also verify that the synchronization cable is present and that a master scanner is detected on
the network.
LabVIEW Verify Sync Cable Status VI
Active X GetSyncStatus method
Low-level Verify Sync Cable Status command
After Arming
After the “Arm” command has been sent to all scanners in the network, a command is sent to only the
master scanner that performs the synchronization of the analog-to-digital converters.
LabVIEW Synchronize Networked Scanners VI
Active X SynchronizeNetworkedScanners method
Low-level Synchronized Networked Scanners command
After Start
After the “Start” command has been sent to all scanners in the network, a command is sent to only the
master scanner that synchronizes the start clock signal among all scanners. Scanning does not start until
this synch is performed.
LabVIEW Start Networked Scanners VI
Active X StartSynchronizedScanning method
Low-level Start Networked Scanners command
The flowchart in Figure 6 shows the steps necessary to implement synchronized scanning.
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