
//INTEGRAS/ELS/PAGINATION/ELSEVIER UK/PLC/3B2/FINALS-7-6-04/0750656794-CH004.3D – 42 – [40–54/15] 19.6.2004
9:06PM
4.2 Mod if ication of the ladder diagram FLASH2
Before any modifications can be carried out, it is necessary for the ladder diagram
FLASH2 to be displayed on the screen.
At the moment, FLASH2 is identical to FLASH1.
4.3 Modification details
As can be seen from the Ladder Diagram – FLASH2-page 43, the modifications consist
of:
1. Line 0
The insertion of a normally closed input X1.
2. Line 6
A single contact of T0 feeds both Timer T1 and Output Y0.
3. Line 11
The insertion of an additional rung. This consists of a normally closed contact Y0,
connected ...