Omega Vehicle Security 1500 Manuel D’Utilisation

Registers, Data Formats, & Queries

NetScan User’s Manual

D-15

 

 

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:

 

 

 

 

 

 

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.