Long-Distance Mode And Stable Communications Mode; (Communications Distance Setting); Noise Environment Measurement Function; Error Logging Function - Omron V700 Series Operation Manual

Error Logging Function

3-6

Long-distance Mode and Stable Communications Mode

(Communications Distance Setting)

Long-distance Mode
Stable Communications
Mode
3-7

Noise Environment Measurement Function

3-8 Error Logging Function
Note Do not set the Controller to energy-saving mode if the single repeat, FIFO trig-
ger, FIFO auto, FIFO repeat, multi-trigger, or multi-repeat option is selected,
otherwise a command error will result.
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. If the ID Tag is far, the amplification factor increases automatically in or-
der to receive the weak signal of the ID Tag.
If there is excessive noise (particularly, air-conditioner noise), the automatic
selection of the amplification factor should be suppressed. If this automatic
selection is suppressed, the RFID System cannot communicate with far ID Tags
but the RFID can perform stable communications even under an environment
where noise is prevalent.
The RFID System allows a selection of either long-distance mode (automatic
selection of amplification factor) or stable-communications mode (no change in
amplification factor). Refer to page 31, DIP Switch Settings for details.
Item
Antenna's signal reception
amplification factor
Communications distance
Environmental noise
interference
Note Environmental noise can be easily checked with the Programming Console. Re-
fer to 3-7 Noise Environment Measurement Function. If the noise environment
measurement function is executed after the Controller is in long-distance mode,
the existing value must not exceed 30. Otherwise, it is recommended that the
Controller be used in stable communications mode.
Noise environment around the location where the Antenna is installed can be
checked using the Programming Console.
Use this function to arrange the best location and best direction of the Antenna or
to determine whether to set the Controller to long-distance mode or stable com-
munications mode. It is recommended that this function be used to check the
noise environment before installing the RFID System.
To use this function, connect the C200H-PRO27-E Programming Console (sold
separately) through the V700-P10 Programming Console Conversion Cable
(sold separately) to the Controller. Refer to 6-6-8 Noise Environment Check for
details.
The error log data of the RFID System can be read on-line through the Program-
ming Console.
Two types of error log data can be read, which makes it possible to analyze sys-
tem errors.
Mode
Long-distance mode
Low or high (automatically
selectable)
Very long distance
Affected easily
Section 3-8
Stable communications
mode
Always low
Long distance
Not affected easily
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