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2-1
2-2
Electrical isolation .........................................................................................2-1
2-3
2-4
Use of centralized and decentralized peripherals .........................................2-2
2-5
Configuration consisting of the central processing unit (CPU) and
expansion modules (EMs)............................................................................2-2
2-6
CPU performance .........................................................................................2-2
2-7
Communication .............................................................................................2-3
2-8
Software ........................................................................................................2-3
2-9
Supplementary features ................................................................................2-3
5-1
Components of an S7-300: ...........................................................................4-2
4-1
Rails - overview .............................................................................................5-4
4-2
Module width .................................................................................................5-4
4-3
Shielding terminals - overview ......................................................................5-5
4-4
Interface modules - Overview .......................................................................5-8
4-5
Types of cabinet ..........................................................................................5-13
4-6
Choice of cabinets.......................................................................................5-15
4-7
VDE specifications for the installation of a PLC system .............................5-17
4-8
Protective grounding measures ..................................................................5-23
4-9
Connection of the load voltage reference potential ....................................5-25
4-10
Connection of the load voltage reference potential....................................5-26
4-11
Connection of the load voltage reference potential....................................5-27
4-12
Characteristics of load power supply units.................................................5-28
4-13
Nodes on the subnet ..................................................................................5-32
4-14
MPI/PROFIBUS DP addresses..................................................................5-33
4-15
MPI addresses of CPs/FMs in an S7-300 ..................................................5-34
4-16
Possible interface operating modes for CPU 317-2 DP.............................5-36
4-17
The following devices may be connected ..................................................5-37
4-18
Available bus cables...................................................................................5-38
4-19
Marginal conditions for wiring interior bus cables ......................................5-39
4-20
Bus connector ............................................................................................5-39
4-21
RS 485 repeater .........................................................................................5-40
4-22
PG patch cord ............................................................................................5-40
4-23
Permitted cable lengths in an MPI subnet segment...................................5-41
4-24
Permitted cable lengths in a PROFIBUS subnet segment.........................5-41
4-25
Stub cable lengths per segment.................................................................5-42
6-1
Module accessories ......................................................................................6-2
6-2
Installation tools and materials......................................................................6-3
6-3
Mounting holes for rails .................................................................................6-5
6-4
Slot numbers for S7 modules........................................................................6-9
7-1
Wiring accessories ........................................................................................7-1
7-2
Conditions for connecting the PS and CPU ..................................................7-2
7-3
Wiring conditions for front connectors...........................................................7-3
7-4
Assignment of front connectors to modules..................................................7-8
7-5
Assignment of front connectors to modules................................................7-10
7-6
Wiring the front connector ...........................................................................7-11
7-7
Assigning the labeling strips to modules .....................................................7-13
7-8
Assigning the shielding diameter to shielding terminals .............................7-14
8-1
Integrated inputs and outputs on the CPU 312C ..........................................8-6
8-2
Integrated inputs and outputs on the CPU 313C ..........................................8-7
8-3
Integrated inputs and outputs on the CPU 313C-2 PtP/DP ..........................8-7
8-4
Integrated inputs and outputs on the CPU 314C-2 PtP/DP ..........................8-8
viii
S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
A5E00105492-03
- Quick Links:
- Installation Manual
- S7-300 Modules
- Wiring
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