206 HEIDENHAIN Technical Manual iTNC 530 HSCI
PLC module Module 9132 Selection of override potentiometer
In a control system with more than one HSCI machine operating panel or
keyboard unit, you can use Module 9132 to define which potentiometers are
to be active. The potentiometer values of the selected operating panel or
keyboard unit are used to calculate the override.
Constraints:
The override potentiometers are selected by selecting the machine
operating panel to which the potentiometers are connected.
The numbering of the machine operating panels starts with 0 and is based
on the arrangement or sequence in the IOC configuration or the HSCI chain.
A machine operating panel or PLB 6001 at connector X501 of the MC always
receives the last, i.e. the highest number of the machine operating panels in
the HSCI system.
After the control has been restarted and the PLC has been restarted/
compiled, the potentiometers on the machine operating panel with the
number 0 or the assignment with the number 0 are active (first operating
panel in the chain).
If you want the previously active operating panel to be active again, the PLC
program must write the corresponding information to the nonvolatile
memory and evaluate it during a restart of the PLC. For safety reasons,
HEIDENHAIN recommends setting the override values to 0 (PLC words
W752, W764 and W766) for the time it takes the PLC program to complete
this task.
There is no basic switchover of operation between the machine operating
panels or the keyboard units. Only the evaluation of the potentiometers is
switched.
Call:
PS K/B/W/D <Number of machine operating panel or assignment>
0...n
PS K/B/W/D <Mode>
0: Selection of the active machine operating panel or the
active keyboard unit
PS K/B/W/D <Reserved>
CM 9132
Error code:
If you use more than one operating station or machine operating panel, the
PLC program must ensure that only one of the two operating devices is
active at any one time so as to avoid danger to the operator.
Marker Value Meaning
M4203 0 No error
1 Error code in W1022
W1022 1 Invalid value for <Mode> parameter
2 Programmed MB machine operating panel or
programmed assignment not found
47 Selection of a machine operating panel was not
entered in the control's log
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