Components Of An S7-300: - Siemens CPU 313C Hardware And Installation Manual

6 0RGXOHV
A programming device (PG) is used to program the S7-300 PLC. Use a PG cable
to connect the PG and the CPU.
Several S7-300 CPUs can communicate with one another and with other
SIMATIC S7 PLCs via the PROFIBUS cable. You can connect several S7-300s
using a PROFIBUS bus cable.
6 PRGXOHV
There is a whole range of components available for creating and using an S7-300.
The table below shows the major modules and their functions.
Table 4-1

Components of an S7-300:

&RPSRQHQWV
Rail
Accessory:
Shielding contact element
Power supply (PS)
4-2
)XQFWLRQ
This is the rack for an S7-300
This converts the line voltage
(120/230 VAC) to 24 VDC
operating voltage and is used to
supply the S7-300 and 24 VDC
load circuits
S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
,OOXVWUDWLRQ
A5E00105492-03