Safety notes
Warning
When electrical devices are operated, parts of these devices will necessarily carry dangerous
voltages.
If these devices are not correctly handled/operated, this can result in death or severe injury as
well as significant material damage.
Only appropriately qualified personnel may work on or in the vicinity of this device.
This device can only function correctly and safely if it is transported, stored, set up and installed
correctly.
Before installation or maintenance work can begin, the system's main switch must be switched
off and measures taken to prevent it being switched on again.
If this instruction is not followed, touching live parts can result in death or serious injury.
System cabling for S7-300
Manual, 09/2018, 70327045899
1
7