4-1
Section
Controller
39
DIP Switch Settings
SW3
Pin 1: Communications Format Setting
Sets whether BCC format is used in communications with the host.
Pin 1
Description
ON
BCC is not used.
OFF
BCC is used.
Pins 2, 3, and 4: Communications Sync Setting
If two or more Antennas are used closely together, the Controllers must operate
in synchronous operation in order to prevent mutual interference. Therefore,
communications sync settings are required in each Controller. Refer to 3-7
Mutual Interference Preventive Function (Synchronous Function) for details.
Pin 2
Pin 3
Pin 4
Description
ON
ON
ON
Slave RO
OFF
Slave RW
OFF
ON
Master RO
OFF
Master RW
OFF
ON
ON
Set from host device
OFF
Not used (Do not set the pins to this setting.)
OFF
ON
Not used (Do not set the pins to this setting.)
OFF
No sync
Note
1. Make sure to set only one of the Controllers as the Master and the other
Controllers as Slaves in synchronous operation, otherwise the RFID Sys-
tem will not operate.
2. Make sure that all Controllers in synchronous operation are the same in
mode (i.e., RW sync, RO sync, or no sync), otherwise the Controllers will be
affected and will not communicate properly.
Pin 5: Low Power Consumption Setting
In case commands can be issued at the time of communications only, the Anten-
na power can be shut down to reduce the total power consumption of the RFID
System. In energy-saving mode, the power consumption of the RFID System is
approximately 30% of that in normal operation.
If the Controller is set to energy-saving mode, the Antenna will have output only
at the time of communications. This mode is available after the communications
command is issued to select the single trigger, single auto, or multi-trigger op-
tion.
Pin 5
Description
ON
Energy-saving
OFF
Normal mode
Note Do not set the Controller to energy-saving mode if the single repeat, FIFO trig-
ger, FIFO auto, FIFO repeat, or multi-repeat option is selected, otherwise a com-
mand error will result.
Pin 6: Communications Distance
In order to perform long-distance communications, the RFID System automati-
cally selects the amplification factor when the Antenna receives signals from the
ID Tag.
It may, however, be better not to select the automatic amplification factor if multi-
ple commands are used or if there is excessive noise. If this automatic selection
is suppressed, the RFID System cannot communicate with far ID Tags but the
RFID can perform stable communications.
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