Siemens S7-200 User Manual download pdf (Page 11)

8

Current Flow in the Ladder Diagram (2)

(Using the Help Function)

Help displays

1 Mark

element

2. F1

F1 On-line-help

Revision

What you know already...

- A Few Words of Revision

- Here are the Bits

- Current Flow in the Ladder Diagram

- The PLC Cycle

If you want to see again the on-line help

for a contact symbol or for other func-

tions:

Mark the contact:

• in the Ladder Diagram (LAD) or

• in the Function Block Diagram (FDB)

resp.

• mark the contact in your STEP 7-

Micro/WIN ladder diagram

with a simple click of the mouse and then

press F1.

F1

Latching Revision

Pulse-Oper-

ated Switch

Off-Delay

Timer

Sequencer Appendix

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 73 74

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