Справочник Пользователя для Balogh T A G Inc 30RMOL81
MOL81 485 1312/MOL81 485 1337
MOL81 485 1312-MOL81 485 1337-UM-1.4-EN
15/20
7 DIGITAL OUTPUTS
7.1 125 kHz OK
This output is active (high) at start-up.
It can be activated or deactivated with the “Write Digital Outputs” command.
7.2 Tag Presence
This output goes active as soon as a tag is detected and goes inactive 12 ms after the last successful tag
detection.
Figure 7.1 : the “PRESENCE” output.
Special case of two narrowly-separated tags
When a second tag is detected before the output "PRESENCE" for the first tag has fallen, then the output is
forcibly deactivated for a fixed time of 20ms in order to indicate the detection of the second tag.
Figure 7.2 : the “PRESENCE” output with two closely spaced tags.
As soon as the second tag has been seen twice, the output falls (for 20ms) and the its ID becomes available for
reading.
reading.
ID1
<12 ms
PRESENCE
ID1 read twice
ID2
20 ms
ID2 read twice
12 ms
ID1
12 ms
PRESENCE
ID1 read twice