Omega Engineering OMB-NETSCAN, Руководство пользователя

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Configuration Aspects for Programmers Appendix C
C-6 NetScan User’s Manual
The remainder of this appendix and the next, pertaining to acquisition setup, refer to normal mode
acquisitions only.
Configuration Requirements
NetScan does not scan channels on its initial power-up. Even though most user-set configuration states have
associated defaults, you must configure a few items before scanning begins.
For NetScan to begin scanning, the controlling computer must perform two operations: (1) Configure each
channel, and (2) select the channels that are to be included in the scan. These operations are illustrated in the
following figure.
After completing these two operations, the alarms and the High/Low/Last Registers are updated at the maximum
possible scan rate. However, the scans are not being placed in the Acquisition Buffer at this time.
PRINT#1,"C1-16,1X"
‘ Configure master channels 1-4 with Type JTC
Inspecting the unit’s High/Low/Last Registers shows the temperature (or voltage) values of the configured
channels.
PRINT#1,"U4X"
‘ Query HLL registers for the configured channels
INPUT#1,A$
‘ Get the response
To begin storing scans in the unit’s Acquisition Buffer at a programmed scan rate, it is necessary to complete the
following four steps:
1. Configure each channel with the desired type.
2. Select the scan intervals.
3. Select the acquisition parameters.
4. Select the trigger parameters.
Once the steps have been completed, NetScan is armed and waiting for the trigger. Once the trigger is satisfied,
NetScan begins collecting scans and storing them in the Acquisition Buffer.
Channel Scan and Scan Interval Definition