HEIDENHAIN TNC 426 CB, Technical Manual

Page: 352 / 1135

6 – 22 HEIDENHAIN Technical Manual TNC 426, TNC 430
6.1.6 Traverse Ranges
You can divide the working range of the machine into three traverse ranges,
e.g. one for each workpiece. Each traverse range is limited by a software limit
switch.
For the software limit switch of a traverse range:
n
The datum is the machine datum (MP960.x).
n
Software limit switches for tilting axes must be activated with MP812 when
MP810.x
≠
0
n
The traverse range can be limited further through the MOD function.
n
If a software limit switch is activated, the error message
LIMIT SWITCH
<AXIS> appears.
n
Software limit switches can be overwritten with FN17:SYSWRITE, e.g. for
automatic tool change. This function is effective only until the next GOTO
command (GOTO key or FN9 to FN12) or the end of the program. (See “Tool
Changer” on page 6 – 400).
Determining range
of traverse 7 7 7 7 You can determine the current range of traverse with Module 9035:
Module 9035 Reading status information
Call:
PS
B/W/D/K <27>
CM 9035
PL B/W/D <Range of traverse>
0 to 2: Traverse ranges 1 to 3
Error recognition:
Selecting the
traverse range You can switch the range of traverse in two ways:
7 7 7 7 Select the traverse range with Module 9151 or 9152. With Module 9152 you
can change the axis display at the same time.
or
7 7 7 7 Select the traverse range with M4574 and M4575 according to the table
below.
7
7 7
7 In all operating modes you must activate the traverse range with strobe
marker M4135.
You may only use the traverse range switching function via M4574 and M4575
during an M/S/T/Q strobe in all operating modes (except for
Manual Operation
and
El. Handwheel
).
Marker Value Meaning
M4203 0 No error
1 Error code in W1022
W1022 1 Status information invalid
20 Call was not in a submit or spawn job
M4574 M4575 Traverse range/Datum
0 0 Area 1
1 0 Area 2
0 1 Area 3