Manual, FT Sensor, Ethernet Axia
Document #9610-05-Ethernet Axia-05
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10.2.4 Sensor Status LED
One LED signals the health status of the sensor as follows:
LED State
Description
Off
The sensor is powering up and checking STATUS.
Red
Indicates an error in the STATUS word.
Green
Normal operation.
Indicates no error in the STATUS word.
Red/Green
(Orange)
Indicates that a F/T axis is out of range.
10.3 Sample Rate
The power-on default sample rate is the rate the user set before removing power. The sample rate is stored
to nonvolatile memory. The “adcRate” field in
Section 10.6—System and Calibration
controls the current
sample rate. The following table lists the rounded and exact sample rates.
Table 10.1—Sample Rate
Rounded Sample Rate
0.5 kHz
1 kHz
2 kHz
4 kHz
8 kHz
Exact Sample Rate
488 Hz
976 Hz
1953 Hz
3906 Hz
7912 Hz
10.3.1 Sample Rate Versus Data Rate
The data rate is how fast data can be output over the Ethernet network.
If the data rate is faster than the sample rate, the customer sees duplicate samples output over the
network until the next sample is read internally. A faster data rate could be useful so that the sensor
sends data at the same rate that other devices in a customer’s system are outputting. For example: if
a discrete I/O device on the same network as the Axia is outputting data at 7,000 Hz, the customer
may want the Axia to be outputting data to the network at 7,000 Hz as well, even though the sensor
is not sampling that quickly internally.
If the sample rate is faster than the data rate, the customer does not receive the data from every
internal sample over the network. However, any filters that are enabled work based on the faster
internal sample rate, and so the sensor filters out higher frequency noise sources than if the filter is
operating at a slower data rate.