Omega Engineering OMB-CHARTSCAN 1400 User Manual page 218

Appendix C
Registers, Data Formats, & Queries
Reference Note: If you are not familiar with programming you will probably gain more understanding of
the program-related portions of this appendix by first reviewing Appendix A, API Commands and
Appendix D, ChartScan Program Examples.
Contents
Using the High/Low/Last (HLL) Registers--------------------------------------------------------------------------- C-2
What is Contained in the HLL Registers--------------------------------------------------------------------------------------- C-2
Accessing the HLL Registers ---------------------------------------------------------------------------------------------------- C-2
Data Format (F) ----------------------------------------------------------------------------------------------------------- C-5
Data Input Formats---------------------------------------------------------------------------------------------------------------- C-5
Data Output Formats-------------------------------------------------------------------------------------------------------------- C-6
Engineering Units Data Format ------------------------------------------------------------------------------------------------- C-6
Binary Data Format --------------------------------------------------------------------------------------------------------------- C-8
Counts Data Format--------------------------------------------------------------------------------------------------------------- C-8
Configuring Power-Up State-------------------------------------------------------------------------------------------- C-9
Queries --------------------------------------------------------------------------------------------------------------------- C-10
Query (?) Commands ----------------------------------------------------------------------------------------------------------- C-10
U Status Commands ------------------------------------------------------------------------------------------------------------ C-11
Status, Event Reporting, and Mask Registers ---------------------------------------------------------------------- C-11
Theory of Operation ------------------------------------------------------------------------------------------------------------ C-12
Calibration Status Register----------------------------------------------------------------------------------------------------- C-14
Error Source Register----------------------------------------------------------------------------------------------------------- C-14
Event Status Register ----------------------------------------------------------------------------------------------------------- C-14
Event Status Enable Register -------------------------------------------------------------------------------------------------- C-14
Status Byte Register ------------------------------------------------------------------------------------------------------------ C-15
Service Request Enable Register---------------------------------------------------------------------------------------------- C-16
IEEE 488 Serial Poll Response ---------------------------------------------------------------------------------------- C-16
Using Status Reporting Registers ------------------------------------------------------------------------------------- C-17
Trigger Latency ---------------------------------------------------------------------------------------------------------- C-18
Trigger Overrun --------------------------------------------------------------------------------------------------------- C-18
Buffer Overrun ----------------------------------------------------------------------------------------------------------- C-18
Buffer Overrun With One Trigger Block ------------------------------------------------------------------------------------ C-19
Buffer Overrun With Multiple Trigger Blocks------------------------------------------------------------------------------ C-19
Real Time Clock---------------------------------------------------------------------------------------------------------- C-19
Open Thermocouple/Range Error Checking ----------------------------------------------------------------------- C-19
ChartScan User's Manual,
1-14-99
C-1