Connecting The S7-200 Cpu - Siemens SIMATIC S7-200 System Manual

S7-200 Programmable Controller System Manual

Connecting the S7-200 CPU

Connecting your S7-200 is easy. For this example, you only need to connect power to your
S7-200 CPU and then connect the communications cable between your programming device and
the S7-200 CPU.
Connecting Power to the S7-200 CPU
The first step is to connect the S7-200 to a power source. Figure 2-1 shows the wiring
connections for either a DC or an AC model of the S7-200 CPU.
Before you install or remove any electrical device, ensure that the power to that equipment has
been turned off. Always follow appropriate safety precautions and ensure that power to the
S7-200 is disabled before attempting to install or remove the S7-200.
Warning
Attempts to install or wire the S7-200 or related equipment with power applied could cause
electric shock or faulty operation of equipment. Failure to disable all power to the S7-200 and
related equipment during installation or removal procedures could result in death or serious
injury to personnel, and/or damage to equipment.
Always follow appropriate safety precautions and ensure that power to the S7-200 is disabled
before attempting to install or remove the S7-200 or related equipment.
DC Installation
Figure 2-1 Connecting Power to the S7-200 CPU
8
24 VDC 85 to 265 VAC
AC Installation