HEIDENHAIN TNC 426 PB/M Technical Manual page 618

Table of Contents

6.13.14 Error Messages

Error messages are displayed by the NC or PLC below the operating mode:

If the error message blinks, switch the machine off and correct the error. If

the error message does not blink, M4177 is set.

You can call PLC error messages with Module 9085 or by activating a marker

(M4800 to M4899):

Define your PLC error messages in the PET table.

Assign the markers to the error messages.

With Module 9086 you can delete PLC error messages, and with Module 9087

you can interrogate the current status of the error message.

In the OEM.SYS file, use the command PLCERRTAB= to enter the name of the

You can automatically generate the entry by calling COMPILE.

If more than one PLC error message is activated at once:

Press the CE key to read the error messages in succession. With the special

command ERRQUE= you can display the list of active error messages in the

large PLC window.

The PLC error message table (.PET) consists of the following columns, to

which you can assign special attributes:

Line number in the table. The modules select the PLC error message by

assigning the line number.

With the HELP key you can display information on the error messages. (See

"Help" on page 6 – 276).

There are three ways to specify the error text:

• Direct entry of the error text (max. 32 characters)

• Line number of the PLC error text file (# <line no.>) specified with

PLCERROR= in OEM.SYS.

• Number of the string memory containing the error text (# <string no.>)

The PLC error message can be activated without module call by setting the

marker defined here (M4800 to M4899). The marker is also set if the error

message was activated through Module 9085.

Entry 0: No error marker

0: No NC reset upon activation of the error message. Error display does not

1: NC reset upon activation of the error message. Error display blinks.

0: No NC stop upon activation of the error message

1: NC stop upon activation of the error message

0: Feed-rate enable is not influenced

1: Feed rate-enable is reset upon activation of the error message

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