AC - Access Keypad (NAT)
FM - Rugged Access Keypad for indoor or outdoor use.
May be used with any of Ringdale's Access Control systems, as an alternative to card, swipe or fingerprint readers. The keypad features 0 to 9 with Clear and Enter.
The Keypad will also work with any FollowMe device, such as the Dual Voltage Kyocera 10baseT/100baseTX KUIO (00-22-0429-0050), as well as the 10/100baseTX Fast In-Line (00-22-0424-2450) and the latest HP 10/100 Fast EIO (00-22-0453-2450).
Access Control devices such as the Duplo Controller allow the Access Keypad to be used in conjunction with Ringdale's Fingerprint Reader or a Proximity Card Reader.
See also Ringdale's combination readers.
Data bytes are sent to the TTL keypad to query for each button pressed. The 8-bit word takes the form
C3 C2 C1 R1 R2 R3 R4 X,
where all are ones except one of C1, C2, C3 and one of R1, R2, R3, R4. X is a don’t care and is the first bit sent.
|
Data
| |
Key |
Shift out right bit first |
Decimal
| |
1 |
11001111 |
207 |
|
2 |
10101111 |
175 |
|
3 |
01101111 |
111 |
|
4 |
11010111 |
215 |
|
5 |
10110111 |
183 |
|
6 |
10010111 |
151 |
|
7 |
11011011 |
219 |
|
8 |
10111011 |
187 |
|
9 |
01111011 |
123 |
|
* |
11011101 |
221 |
|
0 |
10111101 |
189 |
|
# |
01111101 |
125 |
If the data output goes low at the end of the byte, then the key in question is pressed.
|
