Teaching Procedure/Offset - ELGO Electronic FMax Series Operating Manual

7.2

Teaching Procedure/Offset

Should the desired display value differ from the factory-made adjusted original offset, a settlement can be car-
ried out by the external counting unit. Alternatively the offset can be changed by the RS422 interface of the
FMAX.
7.2.1 Teaching Procedure
NOTE
On delivery guide carriage and guide rail are numbered and belong together in pairs.
A teaching procedure is necessary, if only the guide rail or the guide carriage has to be re-
placed.
The teaching procedure has to be carried out as follows:
1. Guide carriage and guide rail are installed and the measuring system can stand at any place.
2. Afterwards the following record has to be sent to the measuring system:
02h STX
4ch „L" = teaching procedure is started
03h ETX
4dh „M" = BCC
3. The guide carriage has to be moved 30 mm in one direction with a speed of 0,01 m/s max. (10
mm/sec. max.) and then back again.
4. Afterwards the following record must be transmitted to the measuring system:
02h STX
42h „B" = teaching procedure is finished
03h ETX
43h „C" = BCC
5. The teaching procedure is completed.
7.2.2 Offset
After installation and connection of guide carriage and guide rail a value will be transferred over the interface.
As this value does not agree with the machine offset, an offset can be deposited usually at the controller side or
directly at the measuring system. In order to adjust this offset at the measuring system, the sensor has to be
moved to the machine offset.
Afterwards the following record must be transmitted:
02h STX
4eh „N" = adjust zero point
03h ETX
4fh „O" = BCC
The measuring system is adjusted to the machine offset. All transmitted values are now related from this offset.
NOTE
This offset adjustment needs to be carried out at any change of guide carriage or guide rail.
In case the counting direction cannot be changed in the controller, the complete slide-system
has to be turned over.
- 14 -
Connections