Plc Modules; Markers, Bytes, Words, And Double Words - HEIDENHAIN TNC 426 PB/M Technical Manual

Table of Contents

7.15 PLC Modules

December 2001

A number of PLC modules are available for PLC functions that are very difficult

or even impossible to perform with PLC commands alone. You will find

descriptions of these modules under the corresponding functions. (See

"Overview of Modules" on page 5 – 3)

If the TNC runs a module unsuccessfully, it sets marker 4203. You then can

evaluate this marker to display an error message.

Module 9000/9001Copy in the marker or word range

Modules 9000 (markers) and 9001 (byte/word/double) copy a block with a

certain number of markers or bytes, beginning with the start address, to the

specified target address. For module 9001 the length should always be

defined in bytes.

The TNC copies sequentially, beginning with the first memory cell. Therefore

the function is not ensured if the source block and the target block overlap and

the source block begins at a lower address than the target block. In this case

the TNC overwrites the overlapping part of the source block before the

copying process.

B/W/D/K <Number of the 1st marker in source block>

B/W/D/K <Number of the 1st marker in target block>

B/W/D/K <Length of block in markers>

B/W/D/K <Number of the 1st word in source block>

B/W/D/K <Number of the 1st word in target block>

B/W/D/K <Length of block in markers>

Error recognition:

Markers, bytes, words, or double words were copied

Error code in W1022

Operand address invalid

Address too high or block too long

Programmed source or destination block too long