4-1
Section
Controller
40
The RFID System allows a selection of either the long-distance mode (automatic
selection of amplification factor) or stable-communications mode (no change in
amplification factor).
Pin 6
Description
ON
Stable communications mode
OFF
Long-distance mode
Note Environmental noise can be easily checked with the Programming Console by
executing the NOISE CHECK command when the Controller is in long-distance
mode. Then if the value of noise reads more than 30, it is recommended that the
Controller be used in stable communications mode.
Pin 7 (V700-CD1D-V3): Not Used
This pin is not used in the V700-CD1D-V3. Leave pin 7 set to OFF.
Pin 7 (V700-CD2D-V3): RS-485 Termination Resistance
When two or more Controllers are connected to a host device, just the 2 devices
at the ends of the communication cable (Controller or host) must be terminated
to ensure stable operation. Turn ON pin 7 to enable the Controller’s terminator if
it is at one end of the cable.
Pin 7
Description
ON
RS-485 termination resistance enabled
OFF
RS-485 termination resistance disabled
Note Be sure to enable the termination resistance of the devices at each end of the
RS-485 communications cable. The devices in between must not be terminated.
Operation will be unstable if the system is not terminated correctly.
Pin 8: Termination Resistance
If two or more Controllers with Antennas are located closely together, the Con-
trollers must be in synchronous operation in order to prevent Antenna mutual
interference. In that case, the Controllers must be connected to one another in
series through a synchronous cable and the termination resistance of the Con-
troller at each end must be set to ON for stable communications.
Use this pin to set the termination resistance to ON or OFF.
Pin 8
Description
ON
Termination resistance is ON.
OFF
Termination resistance is OFF.
Note
1. Be sure to set only the termination resistance of the Controller at each end to
ON and that of any other Controller to OFF, otherwise the Controllers will not
be in stable operations.
2. Always set pin 1 SW3 to OFF, otherwise the Controller may not operate
properly.
SW4
Pins 1 and 2: Baud Rate Setting
Pin 1
Pin 2
Description
ON
ON
38,400 bps
OFF
19,200 bps
OFF
ON
4,800 bps
OFF
9,600 bps
Pin 3: Data Length Setting
Pin 3
Description
ON
8 bits (JIS 8 bits)
OFF
7 bits (ASCII 7 bits)
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