Status WRX900 Series, Руководство по эксплуатации

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5 Setup interface
The unit is equipped with a setup interface to allow configuration via the setup
program. For this purpose, the front features a connector for interface lines with
USB/TTL converter for the connection to a PC.
The setup interface is factory-set with the following values: Baud rate: 9600
bit/s, Data format: 8 data bits, 1 stop bit, no parity.
Minimum response time: 0 ms, Device address: 1.
Chapter 9.1.3 "RS485 interface"
Chapter 11 "Setup program"
6 Actual value calculation of the analog channels
General information
The radio telegram detected by the receiver is transmitted to the controller for
actual value calculation. Here the individual measured values are processed.
Now the controller calculates the respective measured value from the transmitter
counting values. Linearization and temperature calculation automatically follow
the probe characteristic line. Each measured value can be checked for overrange
and underrange by means of two limit values. The minimum and maximum
measured values are saved.
Radio timeout function
The measured values of the probe are monitored via a radio timeout function.
Should an individual radio telegram be missing, the value received last will be
frozen. If no new radio telegram is received throughout the entire timeout
duration, the measured value is set to “no input value” with the top LED flashing
red.
7 Automatic changeover of the interface
The device interrupts communication via the RS485, i.e. the set-up connector has
priority, when an interface cable is connected to the front set-up plug.
8 Analog outputs
A maximum of four analog outputs (current or voltage) are available. The
measured value is scaled to the set values for zero point and end value. Measured
values outside of these limits are detected as measuring overrange or underrange.
In this case, the value set here in the parameter level (value for measuring
overrange and underrange) is applied.
Chapter 5.2 "Connection diagram"
Chapter 8 "Configuration of the receiver"