Honeywell IdentIPoint Intelligent Smartcard Readers
IOM ADDRESS SET UP
Each IOM should have its own
address. The address could range
from 1 to 127. Never use zero as
IOM address as zero is reserved
for the master device.
Note: It is recommended not to
attach more than 4 IOM units to the
RS485 bus to maintain a
reasonable signal/response time
delay between the reader and
IOMs. Hence IOM addresses must
be from 1 to 4 only.
To work out the address, select a
combination of bit locations on the
DIP switch. Each bit has its own
value representation. The RS485
address is obtained by adding all
ON-bit values. E.g. Decimal value
37 will be obtained by turning ON
bits 1, 3 and 6 which equivalents to
1+4+32.
NOTE: Please refer to IdentIPoint
Hardware Installation Manual (doc.
no. 95-7767) for more details on
the following items:
Overall system architecture
Power supply installation
Detailed wiring descriptions
for readers, IOM and
peripheral devices
Power-over-Ethernet
wiring
RS485 ID
+
1
+
2
+
4
+
8
+
1 6
+
3 2
+
6 4
RS485 ID
+
1
+
2
+
4
+
8
+
1 6
+
3 2
+
6 4
SUM
all
ON
bit
values
Never
use
address
zero
SUM
all
ON
bit
values
Never
use
address
zero
RS485 ID
+
1
+
2
+
4
+
8
+
1 6
+
3 2
+
6 4
RS485 ID
+
1
+
2
+
4
+
8
+
1 6
+
3 2
+
6 4
SUM
all
ON
bit
values
Never
use
address
zero
SUM
all
ON
bit
values
Never
use
address
zero
Fig.28. IOM Address set up
95-7771
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