Program Creation; Ascii Editor; Program Format - HEIDENHAIN TNC 426 PB/M Technical Manual

Table of Contents

7.5 Program Creation

With the integrated editor you can create the PLC program and all other

necessary files right at the control through the ASCII keyboard. You will find a

comprehensive description of the editor including its soft keys in the User's

Manual of the control.

A command is the smallest unit of a PLC program. It consists of the operation

part and the operand part.

The operation describes the function to be executed. It says how the operand

is to be processed by the TNC. The operand shows what is to be operated

with. It consists of the operand abbreviation and a parameter (address). With

the PLC commands you can combine (gate), delete and load register and

memory contents, both with bit and word processing. For word processing,

you can address memory contents with a length of 8 bits (byte), 16 bits (word)

or 32 bits (double word). When you enter a command, the TNC immediately

checks it for the correct syntax and, if necessary, displays an error message.

See "Error Messages" on page 10 – 3

HEIDENHAIN Technical Manual TNC 426, TNC 430