Monitor/Control Using Hmi Advanced - Siemens SINUMERIK 840DiE sl Manual

6 PLC Commissioning
6.7 Testing the PLC program
Variable types
Additional test
functions
6.7.4

Monitor/control using HMI Advanced

PLC status
display
Input syntax
6-158
S
Enabling PA and activating control values
Assigning values to I/O outputs of the PLC user program or CPU module in
the STOP state.
S
Forcing variables
Assigning values to variables of the PLC user program or CPU module that
cannot be overwritten from the PLC user program.
The values of the following variable types can be defined or displayed:
– Inputs, outputs, flags, timers, and counters
– Contents of data blocks
– I/Os
The variables that are to be displayed or controlled are grouped in variable
tables.
You determine when and how often variables will be monitored or overwritten
with values by defining trigger points and trigger conditions.
The menu command Target System > ... provides the following additional test
functions:
– Display accessible nodes
– CPU messages ...
– Display force values
– Diagnose hardware
– Module status ...
– Operating status ...
The PLC status display of HMI Advanced is used to monitor and control:
– Inputs, outputs, flags, timers, and counters
– Contents of data blocks
The menu of the PLC status display is located at operation path: Operating
Area Switchover > Diagnosis > PLC Status.
The following two tables show the input syntax of the fields: Operand and
Format of the PLC status display.
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
01/2007