ACM - Access Control Module(s)
11
The STARn connectors are not keyed so it is possible to reverse the signals. If the
ground connector (pin 4) is connected to +12 VDC (pin 1), damage to the power supply
or the RM could result.
The reader number is determined by a hexadecimal switch on the RM, not by the Port
into which the reader is plugged. To enable the correct reader number, set the
appropriate S2-n hexadecimal switch ON. For example, S2-1 is for reader 1, S2-2 is for
reader 2, etc.
S4 is used to terminate the two wire, half duplex RS485 signals at the iSTAR. Note that
the S4 switch is mounted upside down in the normal front view. This is done so that
switch 1 is on the right and switch 8 is on the left, and the switches have the same
orientation as the ports.
Wiegand Signaling
Readers
Wiegand signaling devices can be directly connected to WG Ports 1-8. In this case, the
port number defines the reader number. If 22 or 24 AWG wire is used, the connection is
limited to 200 feet. If 18 AWG wire is used, the distance can be up to 500 feet.
The appropriate S2-n switch must be OFF to enable the Wiegand port.
The pinout is shown in Table 5:
Warning! If the jumper is set to +12 VDC and an older +5 VDC reader is
connected, the reader may be damaged.
TABLE 5. Wiegand Port Pinouts
WG Port Pin Number Signal/Function
1
Power (+12 VDC or +5 VDC)
a
a. The P34 jumper defines whether +5 VDC or +12 VDC is supplied through
Pin 1 on all of the WG Port connectors. This jumper is factory set to +5
VDC. If the readers require +12 VDC, this jumper must be changed.
2
GND
3
Data 0
4
Data 1
5
Red LED
6
Yellow LED
7
Green LED
8
Beeper
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