HEIDENHAIN TNC 335 Technical Manual - Manual (Page 16)

9/93
TNC 360/TNC 335 Update information No. 1 1-1
Update Information No. 1
1 Software
In July 1993 the following software was released:
260 02x 08 for insertion of 1M byte EPROMs
and 280 49x 08 for insertion of 2M byte EPROMs
The software numbers 280 49x 01 to 07 were not delivered. The new software version became
necessary because new logic units can also accommodate 2M byte EPROMs (see below in Section
2 "Hardware").
The new software version contains the following changes:
•
The PLC can limit the maximum feed rate through the doubleword D596. In order to ensure
compatibility to previous PLC programs the doubleword D596 is preset with the value
300 000 mm/min after control switch-on or after interruption of the PLC run.
The new feed rate is effective immediately!
The doubleword D596 has no effect with the new cycles "Tapping" (Cycle 2) and "Rigid Tapping"
(Cycle 17).
•
In the newly introduced machine parameter MP60, axes can be defined as auxiliary axes.
These axes cannot be moved by an NC program. They are controlled exclusively by the PLC.
All auxiliary axes work independently of each other. Auxiliary axes always move in trailing
mode. The following modules are available for the PLC to control the axes:
Module 9120: Positioning of auxiliary axes
Module 9121: Stopping the auxiliary axes
Module 9122: Status inquiry of auxiliary axes
Module 9123: Traversing the reference point of an auxiliary axes
•
Spindle orientation can be suppressed at the beginning of Cycle 17 "Rigid Tapping" with
machine parameter MP7160. At the beginning of the cycle, the spindle voltage is decelerated
with the ramp from MP3410.1 to the value 0 volts.
In this case it is not possible to cut into the same thread several times!
•
Up to 20 NC "tool def" blocks can be read-in during blockwise transfer without central tool
memory, whereby the tool def block must be read-in before the associated "tool call". When a
"PGM call" NC block is read-in or when a user cycle is called, the NC blocks with "tool def" are
considered up to the above mentioned limit and provided that the proper order is followed. A
violation of these preconditions releases the error message "TOO MANY TOOLS".