Omega Vehicle Security 1500 Status Byte Register

Appendix D Registers, Data Formats, & Queries
NetScan User’s Manual D-15
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.
The status byte register contains the following active bits:
Bit Location Value Description
DIO1 (LSBit)
1 Alarm
DIO2
2 Trigger Detected
DIO3
4 Ready
DIO4
8 Scan Available
DIO5
16 Message Available
DIO6
32 Event Status Register Bit (ESB)
DIO7
64 Service Request Bit
DIO8 (MSBit) 128 Buffer Overrun
All bits in the Status Byte Register are cleared by either a *R command, which returns the NetScan to its power-
up default conditions, or a read of the serial poll status byte register via the Status command U1. The ESB in the
Status Byte Register is also cleared by these operations. The Command Error, Execution Error and Device
Dependent Error are also cleared with an Error Query (E?) command.