5
Entry-Master Option-4 Hardware Installation Guide
5. The default settings for the DIP switches are listed below:
!
Switches
1 & 2 should always be in the ON position!
!
Switches
3 & 4 both come from the factory in the ON position
!
Dip
Switch
5 comes from the factory in the OFF position
!
Switches
6, 7 & 8 all come from the factory in the ON position
6. The Option-4 board supports only the Dallas iButton readers.
Only two of the wire leads are used for each reader. The wiring
scheme is described below:
Reader 1 and 2 Connections
Reader 3 and 4 Connections
7. Please Note that the pin-outs for the reader connectors are
reversed, if they are looked at from top to bottom of the circuit
board; that is to say, on
READER 1
the pin-outs from top to bottom
are: D0, D1, G, +V and L, but for
READER 2
the pin-out from top to
bottom are: L, +V, G, D1 and D0. They are "backwards" on
iButton Signals Wire
Color
D0 Reader 1 Data/+V
Grey
D1 Reader 2 Data/+V
Grey
G
Ground for both readers Black
+V Not Used on Option-4
N/A
L
Not Used on Option-4
N/A
iButton Signals Wire
Color
D0 Reader 3 Data/+V
Grey
D1 Reader 4 Data/+V
Grey
G
Ground for both readers Black
+V Not Used on Option-4
N/A
L
Not Used on Option-4
N/A
Black wires from
both i-Tag readers
Grey wire from
Reader 4 (D1)
Grey wire from
Reader 3 (D0)
Black wires from
both i-Tag readers
Grey wire from
Reader 1 (D0)
Grey wire from
Reader 2 (D1)