User Manual

“Halo” System: Communication Protocol 970-00002-000
EXI Wireless Systems, Confidential Page 23 of 33 July 27, 1999
Bit 0 Door 0 – door closed
1 – door open
When in the idle mode, the Input States field equals 73 Hex.
3. Device Status
This byte describes the Controller’s state.
Table 8 Device Status
bit State Description
Bit 7 Not used
Bit 6 RF field occupied Tag is in the field, regardless if it generates alarm or not.
Bit 5 Override Host requested. Controller releases the maglock, turn off
alarm relay and both LEDs and stop all interrogation.
Bit 4 Unlock Host requested. Maglock is released, current alarm is cleared.
Bit 3 Bypass Controller is in the bypass mode.
Bit 2 Host alarm Host requested. Maglock, alarm LED and relay activated,
Bit 1 TIC alarm TIC received from the Tag
Bit 0 TIF alarm TIF received from the Tag