Siemens 6AV6651-7KA01-3AA4 - S7-1200 + KTP400 Basic Starter Kit 6AV6651-7KA01-3AA4 User Manual

Product codes

6AV6651-7KA01-3AA4

Easy to use the online tools

11.6 Using the force table

Easy Book
Manual, 03/2014, A5E02486774-AF

261

To create a watch table:
1. Double-click "Add new watch table" to open a new

watch table.

2. Enter the tag name to add a tag to the watch

table.

To monitor the tags, you must have an online connection to the CPU. The following options

are available for modifying tags:
● "Modify now" immediately changes the value for the selected addresses for one scan

cycle.

● "Modify with trigger" changes the values for the selected addresses.

This function does not provide feedback to indicate that the selected addresses were

actually modified. If feedback of the change is required, use the "Modify now" function.

● "Enable peripheral outputs" allows you to turn on the peripheral outputs when the CPU is

in STOP mode. This feature is useful for testing the wiring of the output modules.

The various functions can be selected using the buttons at the top of a watch table. Enter the

tag name to monitor and select a display format from the dropdown selection. With an online

connection to the CPU, clicking the "Monitor" button displays the actual value of the data

point in the "Monitor value" field.

11.6

Using the force table

A force table provides a "force" function that overwrites the value for an input or output point

to a specified value for the peripheral input or peripheral output address. The CPU applies

this forced value to the input process image prior to the execution of the user program and to

the output process image before the outputs are written to the modules.

Note
The force values are stored in the CPU and not in the force table.
You cannot force an input (or "I" address) or an output (or "Q" address). However, you can

force a peripheral input or peripheral output. The force table automatically appends a ":P" to

the address (for example: "On":P or "Run":P).