Hardware Information; Designation Of The Logic Unit - HEIDENHAIN TNC 426 PB/M Technical Manual

2.4 Hardware

2.4.1 Designation of the Logic Unit

December 2001
ID number of the logic unit:
Basic ID number
The basic ID number indicates hardware differences.
This first digit of the variant number indicates hardware changes.
The second digit of the variant number specifies the option:
Option Meaning
number
3 Export version with "digitizing with triggering touch probe"
option
4 Standard version with "digitizing with triggering touch probe"
option
7 Standard version with "digitizing with measuring and triggering
touch probe" option
8 Export version without option
9 Standard version without option
Variant Changes to LE 426 C/P, LE 430 C/P
xxx xxx-2x Initial version
xxx xxx-3x Stronger rectifier in power supply
xxx xxx-4x 4 MB RAM; 3-row VGA connection;
3-phase current controller
xxx xxx-5x Power supply unit with higher performance
Variant Changes to
LE 426 M, LE 430 M
324 990-xx to 324 997-xx
xxx xxx-1x –
xxx xxx-2x Initial version
xxx xxx-3x New hard disk suspension,
certain position encoder inputs
with EnDat interface
Hardware
312 001-27
Variant
Options
Hardware change
Changes to
LE 426 M, LE 430 M
344 958-xx to 344 965-xx
flash EPROMs,
all encoder inputs with EnDat
interface
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