Plc Status - Siemens SINUMERIK 828D Function Manual

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D1: Diagnostics tools

5.5 PLC status

PLC status signals can be checked and altered via the operator panel in the "Diagnostics" operating area.

The end customer or service personnel can use this function on site without a programming device to do the

Check the input and output signals of the PLC I/Os.

Carry out limited troubleshooting

Check the interface signals for diagnostic purposes.

For information about status display operation and changing PLC signals, refer to the Operator's Guide for the

relevant HMI software.

Status display

The status of the following data can be displayed on the operator panel.

Interface signals from the machine control panel

Interface signals to the machine control panel

Interface signals between the NCK and PLC

Interface signals between the HMI and PLC

Data blocks (DB 0-127)

Flags (FB 0-255)

Timers (T 0-127)

Counters (C 0-63)

Inputs (IB 0-127)

Outputs (QB 0-127)

For a breakdown of the interface signals (DBx, DBBy), refer to:

/LIS2/ Lists (Volume 2)

Change in status

The status of the above signals can be changed for test purposes. Signal combinations are also possible. A

maximum of ten operands can be altered at any one time.

Function Manual, 09/2011, 6FC5397-0BP40-2BA0

Basic Functions

Sinumerik 840d sl