Process and device for the parameterization of measuring device
In a measuring device, the measured data of a data recording component ( 10 ) are transmitted to an evaluating component via an output device ( 12 ). Parameters of the measuring device are stored in a memory ( 18 ). For the purpose of parameterization, parameters from the evaluating component can be stored in the memory ( 18 ) over a data cable for transmitting the measured data. To this end, the output device ( 12 ) for this data cable (Z) is operated at high impedance.
1. A method for parameterization of a measuring device, the device being configured to operate in three modes comprising:
transmitting measured data of the measuring device over data cables in a first mode, wherein a microcontroller operates the at least one of the data cables at low impedance and the microcontroller connects the output device to a data recording component via a switch;
storing parameters of the measuring device in a memory, reading out parameters stored in the memory, and transmitting the parameters to an evaluation unit in a second mode, wherein the microcontroller operates the at least one of the data cables at low impedance, and the microcontroller connects a transmitting cable to the output device via the switch; and
supplying the parameters to the memory over at least one of the data cables, and in supplying the parameters, operating the at least one of the data cable at high impedance for a time period relative to the transmission of measured values, the microcontroller operating the at least one of the data cables at high impedance in a third mode using the tri-state cable,
wherein the time period is started by turning on the measuring device,
wherein the time period is terminated if no parameterization request signal presents on the at least one of the data cables after a defined period of time.
2. The method according to claim 1 , wherein the time period is terminated by a command transmitted with the parameters.
3. The method according to claim 1 , further comprising switching the parameters to the at least one of the data cables in place of the measured data, during which time, the at least one of data the cables is not operated at high impedance.
4. A device for parameterization of a measuring device, the measuring device comprising:
a data recording component;
an output device, connected to the data recording component by at least one data cable, via a switch;
a memory, connected to the output device with a transmitting cable via the switch; and
a microcontroller that operates the device in three modes:
a first mode, in which the microcontroller operates the at least one data cable at a low impedance and the microcontroller connects the output device the data recording component via the switch;
a second mode, in which the microcontroller operates the at least one of the data cables at low impedance, and the microcontroller connects the transmitting cable to the output device with the switch; and
a third mode, in which the microcontroller operates the at least one of the data cables at a high impedance over a tri-state cable for a time period,
wherein the time period is started by turning on the measuring device, and
wherein the time period is terminated if no parameterization request signal is received on the at least one data cable after a defined period of time.
5. The device according to claim 4 , wherein the micro-controller operates the output device at high impedance over the tri-state cable, and tests for the a presence of parameter signals on the data cables running outward from the output device; and switches the output device through the data cables when there is no parameter signal present after a predetermined time period; and, when parameter signals are present, switches the output device through the data cables after completing transmission of the parameters.
6. The device according to claim 4 , wherein the switch is positioned in front of the output device in the at least one of the data cables, and the switch is controlled by the a micro-controller to route to the output device either the at least one of the data cables running from the data recording component or a transmitting cable coming from the micro-controller, in an alternate fashion.