MultiBio700- User Manual
eSSL Pvt. Ltd.
Page 79
Appendix 5 Anti-Pass Back
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【
overview
】
Sometimes, some illegal people follow the other one into the gate, which will cause the
security problems. To prevent such risks, this function is enabled. The In record must
match the Out record, or the gate won’t open.
This function needs two machines to work together. One is installed inside of the door
(master machine hereinafter), the other is installed outside of the door (slave machine
hereinafter). Wiegand signal communication is adopted between the two machines.
【
Working principle
】
The master machine has Wiegand In and slave machine has Wiegand Out functions.
Connect Wigand Out of slave machine to Wiegand In of master machine. Wiegand
output from slave machine must not own machine ID. The number sent to master
machine from slave machine must be found in the master machine.
【
Function
】
Judge whether it is anti-
pass back according to user’s recent in-out record. In record
and out record must be matched. This machine supports out, in, or out-in anti-pass
back.
When the master machine is set as “out anti-pass back”, if user wants to come in and
go out normally, his recent record must be “in”, or he cannot go out. Any “out” attempt
