Omron CRT1 - 10-2008, Operation Manual

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5
Features of CompoNet Slave Units Section 1-1
Disconnected Line
Detection With Analog Input Units, the Disconnected Line Detection Flag for each input
can be used in the Master Unit to check whether the analog input lines (for
voltage inputs or current inputs) are disconnected for analog inputs that are
enabled under the setting of the number of AD conversion points.
This function is supported only when the input range is 1 to 5 V or 4 to 20 mA.
With Temperature Input Units, disconnections can be detected for each sen-
sor input. The status can be checked at the Master Unit using the Discon-
nected Line Detection Flag.
User Adjustment The user adjustment function can be used to compensate offsets in input (or
output) values that occur due to the features of or connection method used for
input or output devices to adjust the input (or output). The conversion line is
adjusted at two points: 0% and 100%.
The adjustments can be made by using the CX-Integrator.
Top/Valley Count With Temperature Input Units, the maximum or minimum number of times the
top or valley value is reached can be counted for an application that has fixed
cycles of temperature changes. Explicit messages can be used to see if the
number of cycles has exceeded a monitoring set value.
The settings are made by using the CX-Integrator.
Temperature Range Total
Time Count With Temperature Input Units, the length of time that the temperature input
value is within a user-set temperature range can be measured in seconds.
Explicit messages can be used to see if the measured time has exceeded a
monitoring set value.
The temperature range total time count settings are made by using the CX-
Integrator.
Input Temperature
Variation Detection With Temperature Input Units, the temperature difference between two inputs
for inputs 0 to 3 can be detected and compared with a monitoring set value.
Explicit messages can be used to see if the temperature difference has
exceeded the monitoring set value.
The input temperature variation detection settings are made by using the CX-
Integrator.
Input Error Detection
Disable Function With Temperature Input Units, if there is an unused input, detection of input
errors (including disconnection) can be disabled.
Input error detection is disabled by using the CX-Integrator.
Other Features
Rotary Switch Setting of
Node Addresses Node addresses can now be set much more easily using rotary switches.
Bit-level Distribution (Bit
Slaves) Slave Units are available with 2 inputs, 2 outputs, 4 inputs, or 2 inputs/2 out-
puts. These enable bit-level distribution of Slave Units. At the same time,
unused Slave Unit I/O can be suppressed.
IP54 Dust-tight, Splash-
proof Units (Bit Slaves) The CRT1B- @ D @@ SP(-1) Units conform to the IEC IP54 dust-tight, splash-
proof degree of protection (see note).
Note For protection against human bodies and solid foreign objects,
IP54 requires that dust will not penetrate inside the device to a de-
gree that would affecting operation. For protection against water in-
gress, water splashing from any direction must have no adverse
effect.