Status Byte Register; Value Description - Omega Engineering OMB-CHARTSCAN 1400 User Manual

Appendix C

Status Byte Register

The acquisition device sets the Message Available bit (MAV) in the Status Byte Register to determine if data
can be read by the controller. This is the only status reporting register which requires RS-232 interface users to
use a different read command than IEEE 488 interface users.
The status byte register contains the following active bits:
Bit Location
DIO1 (LSBit)
DIO2
DIO3
DIO4
DIO5
DIO6
DIO7
DIO8 (MSBit)
All bits in the serial poll status byte register are cleared by either a
power-up default conditions, or a read of the serial poll status byte register via the Status command
ESB in the Serial Poll Status Register is also cleared by these operations. The Command Error, Execution Error
and Device Dependent Error are also cleared with an Error Query (
ChartScan User's Manual
Value Description
1 Alarm
2 Trigger Detected
4 Ready
8 Scan Available
16 Message Available
32 Event Status Register Bit (ESB)
64 Service Request Bit
128 Buffer Overrun
Registers, Data Formats, & Queries
command, that returns ChartScan to its
*R
) command.
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. The
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C-15