Forcing An Element - Siemens SIMATIC 505 User Manual

Simatic 505 SoftShop
Figure 6.8
2. Click the desired data format. For the String field, you can enter
the number of characters to be displayed (from 1-64).
3. Click OK to select the format and return to the Data Window.

Forcing an Element

As a troubleshooting tool, control relays can be forced. The force
attribute bit, also shown in Figure 6.8a, provides a single-bit memory
location for storing the forced status of control relays. If a control relay
has been forced, the control relay retains that forced status during a
power cycle as long as the battery is good.
Control
relay
ie.
C1...C(X)
10
11
Figure 6.8a
You can force an element from either Data Window or Ladder logic
editor complete the following steps.
From the Data Window:
1. Click on the right mouse button while in the Data field of an
Element or the Data menu while in the Data field of an
Element.
1
2
3
4
5
6
7
8
9
1
2
3
4
5
Force attribute bit
6
ie.
7
C1...C(X)
8
9
10
11
6 - Programming • • • • 105