8-11
9-1
9-2
9-3
Installing a new module.....................................................................................9-7
9-4
Inserting the front connector .............................................................................9-8
9-5
9-6
10-1
10-2
10-3
Diagnostics with CPU 31x-2 (315-2-DP as of 315-2AF03)...........................10-12
10-4
10-5
10-6
10-7
10-8
10-9
10-10
10-11
11-1
Possible paths of electromagnetic interference ..............................................11-3
11-2
11-3
11-4
Mounting cable shielding...............................................................................11-13
11-5
Equipotential bonding....................................................................................11-14
11-6
Lightning protection zones of a building........................................................11-20
11-7
Sample circuitry for networked S7-300 PLCs ...............................................11-26
11-8
EMERGENCY-OFF relay contact in the output circuit..................................11-28
11-9
11-10
Circuit for coils operated with AC voltage .....................................................11-29
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
Contents
vii