TransCore encompass 4 - Reset Power Fail Bit

Encompass 4 Reader System Guide
7-42
more than 1 reader on the bus can have the same value, but TransCore recommends
us
ing all 10 slots before reusing them. Command #582 displays the Synchronization
Hold Off Time.
Table 7-17 lists an example of a plaza having five Encompass 4
Readers in lanes
where multiple readers identifying the same tag
would present a system problem. All
of the readers are cabled together on a synchronization bus (see Figure 7-1). The
example timing for #648NN is appropriate assuming IA
G is the only protocol enabled
in all readers. The RF for all readers is set to 915.75 (#6470DF) and in this example it
is determined that an IAG attenuation setting of 9 dB (#64609) prevents a reader from
activating a tag in an adjacent lane.
Table 7-17 Example of Encompass 4 Reader Plaza Synchronization Bus Settings
Reader Lane
Set Synchronization Output Delay
Time
(#648NN)
Set Synchronization Hold-Off Time
(#649NN)
1*
2
3
4
5
* Reader 1 becomes the bus synchronization master.
65 Reset Power Fail Bit
Command #65 resets the power fail bit to 0. The bit changes from 0 to 1 when power
is restored to the reader. Upon reader power-up, the host transmits either command
#65 or #63 Reset Reader to properly initialize this bit. The current state of the power
fail bit may be displayed. Refer to “520 Display Power Fail Bit” on page 7-19 for
more information.
Reader response:
Done
66F Load Default Operating Parameters
Command #66F loads all the factory default operating parameters except RF operat-
ing frequency. Refer to Table 8-2, Encompass 4 Reader Default Configuration Set-
tings” for
a listing of the defaults.
Reader response:
Done All parameters loaded OK
Error
A parameter load failed
67N Set Output Pulse Duration
#64814 = 20 ms synchronization time #64901 = 1 ms hold off
#64816 = 22 ms synchronization time
#64902 = 2 ms hold off
#64818 = 24 ms synchronization time
#64903 = 3 ms hold off
#6481A = 26 ms synchronization time #64904 = 4 ms hold off
#6481C = 28 ms synchronization time #64905 = 5 ms hold off