HEIDENHAIN TNC151B User Manual

SERVICE MANUAL TNC 151/155
Page 50
Kundendienst
Section 4/4.1
4. Additional Information
4.1 Block Diagram Description
The TNC 151/155 block diagram shows, in simplified form, the
internal functional units of the control, their relationship
to the various boards, and their interconnections. The graphic
layout of the diagrams and the way it is folded permit:
- the representation of any of the TNC 151/155 (B/BR/Q/QR)
models
- simplified representation ,of functional processes
Numbers enclosed between dashes inform about the board and
its functional unit.
e.g.: -50.1-
LSubdivision of functional unit
i'-
Functional Unit
Board
Simplified Description of the TNC 151/155 (Block Diagram)
- Keypad Board (1)
- Main Processor Board (2)
- CLP Processor/Graphics Board (3)
- Analogue Board/Analogue Board TTL (4)
- with SE Board (5) it corresponds to a B(F)-Type;
- without SE Board, with PLC Interface (51, however
- with PLC I/O-Board(s), it corresponds to a Q(W)-Type or,
respectively, QR(WR)-Type
- Power Supply Board (6)
- Terminal Board (7)
The functional processes of the control are divided between
two microprocessor systems, each comprising:
- Microprocessor (TMS 9995)
- Program Memory (EPROMs)
- Write-Read Memory (RAMS)
- Input/Output facilities (e.g. keypad, screen, measuring
system inputs,
analog outputs, LDs, V.24 interfaces etc.)
The functions of the control are divided between the two
microprocessor systems as follows:
1. "Main Processor System"
- Keypad, LEDs
- User Program Interpreter
- Provision of programming "environment"
- Generation of PLC program addresses
* - Transfer of input and output states via the SE-board
or PLC interface and PLC I/O-board
* - Control of the V.24 interface
2.
'CLP/Graphics System"
- Ascertainment of instantaneous poSitiOns
- Interpolation Calculations
- VDU Control
* - Demand Speed Values to DAC
* - Interface with handwheel unit
* Serial data transfer via CRU bus.
Main Processor Unit
- Primarily on the main processor board (which is ccmmn to
TNC 151 and TNC 155).
- The operating system (NC software) is contained in EPROMs:
-20.1- IC-P3 (Dialog Language)
-20.3- IC-P4, IC-P5
-23.1-
IC-P6 (PI&Software)

HEIDENHAIN TNC151B Specifications

General

Brand	HEIDENHAIN
Model	TNC151B
Category	Control Systems
Language	English