Siemens S7-400 - Page 16

Contents
xvi
S7-400 and M7-400 Programmable Controllers Hardware and Installation
A5E00069481-04
Figures
2-1 Rack Fitted with Modules in the S7-400 System 2-2. . . . . . . . . . . . . . . . . . . . .
2-2 Max. Cabinet Ambient Temperature as a Function
of Power Dissipation of Equipment in the Cabinet 2-28. . . . . . . . . . . . . . . . . . . .
2-3 Fitting Memory Cards in the CPUs 2-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4 Memory Card 2-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5 Removing the Cover 2-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6 Attaching the Modules 2-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-7 Screwing the Modules in Place 2-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-8 Inserting the Key in the CPU 2-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-9 Fitting a Slot Label 2-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1 Operating the S7-400 from a Grounded Supply 4-6. . . . . . . . . . . . . . . . . . . . . .
4-2 An S7-400 Configured with Grounded Reference Potential 4-7. . . . . . . . . . . .
4-3 An S7-400 Configured with Ungrounded Reference Potential 4-8. . . . . . . . . .
4-4 Simplified Representation of Configuration with Isolated Modules 4-11. . . . . . .
4-5 Parallel Wiring of a Digital Output with Different Rated Load Voltages 4-12. . .
4-6 Parallel Wiring of a Digital Output with Identical Rated Load Voltages 4-12. . .
4-7 Grounded connection load voltage 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-8 Shielding and Grounding the Connecting Cable for
a Remote Connection 4-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-9 Setting the voltage selector 4-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-10 Disconnecting power supply connector 4-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-11 Wiring the power supply connector 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-12 Plugging the power supply connector 4-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-13 Preparing to wire the front connector 4-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-14 Wiring a Front Connector with Crimp Snap-On Terminals 4-26. . . . . . . . . . . . . .
4-15 Wiring a Front Connector with Screw-Type Terminals 4-27. . . . . . . . . . . . . . . . .
4-16 Wiring a Front Connector with Spring-Type Terminals 4-28. . . . . . . . . . . . . . . . .
4-17 Principle of the spring contact 4-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-18 Fitting a Strain Relief (Viewed from Below) 4-30. . . . . . . . . . . . . . . . . . . . . . . . . .
4-19 Fitting the Labels on the Front Connector 4-31. . . . . . . . . . . . . . . . . . . . . . . . . . .
4-20 Fitting a Label in the Front Connector 4-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-21 Attaching the Front Connector 4-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-22 Screwing On the Front Connector 4-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-23 Plugging a Connecting Cable into a Send IM 4-38. . . . . . . . . . . . . . . . . . . . . . . .
4-24 Connection Between a Send IM and Two Receive IMs 4-39. . . . . . . . . . . . . . . .
4-25 Wiring the Fan Subassembly 4-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1 Communication between Programming Device/Operator Panel
and a Module without MPI 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2 Data Exchange 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-3 Terminating resistor on bus connector 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-4 Terminating resistor on RS 485 repeater 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-5 Terminating resistor on MPI network 5-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-6 Example of an MPI network 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-7 Example of a PROFIBUS DP network 5-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-8 Example with CPU 414-2 5-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-9 Programming device access beyond network limits 5-14. . . . . . . . . . . . . . . . . . .
5-10 Configuration of an MPI network 5-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-11 Bu s connector 5-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-12 Strip bus cable 5-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-13 Inserting cores into the screw termninal blocks 5-21. . . . . . . . . . . . . . . . . . . . . .
5-14 Switch on terminating resistant 5-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .