SIMATIC TIA Portal Programming 1
2.5.2. SIMATIC S7-1200: Installation and Mounting Positions
Standard
mounting rail Bus
Busverbinder
connector
Vertical
1x expansion cable
Horizontal
Alternative attachment
Installation
The modules are mounted on a standard mounting rail or alternatively screwed into the control
cabinet.
S7-1200 Expansion Cable
It offers additional flexibility in configuring the S7-1200 system. One expansion cable can be used
for each CPU system.
Either between the CPU and the first SM or between two SMs
Bus Connector
It is located as a mechanical slide on the left side of the SM modules.
It is mechanically attached on the right side of the CMs/CPs.
Mounting Positions
A horizontal or vertical mounting is possible.
Caution!
With a vertical mounting, the maximum allowed ambient temperature is 10 °C lower.
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2.5.3. SIMATIC S7-1200: Signal, Communication or Battery Board
Available boards:
analog, digital
RS485
battery
Application
These boards are used for application-specific adaptation of the CPU to the requirements of the
plant. The physical size of the CPU remains unchanged.
Signal Board (SB)
Digital signal board
only inputs
only outputs
inputs and outputs
Analog signal board
only inputs
only outputs
Communication Board (CB)
RS485 interface
Battery Board (BB)
A battery board (housing for CR1025 battery) ensures the long-term battery backup (buffering) of
the real-time clock.
Buffering time without battery board typically 20 days / minimum 12 days at 40°C
Buffering time with battery board approximately 1 year
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2.6. SIMATIC S7-1500: Modular Controller
for the Mid to Upper Performance Range
Highlights of the SIMATIC S7-1500 System
Highest performance of the entire system (terminal-terminal)
High performance program execution in the CPU
High performance backplane bus
PROFINET interface with PROFINET IO IRT on every CPU
Automatically activated system diagnostics, right down to the
IO channel
Trace for all CPU tags
CPU - Display for:
Access to MLFB, FW version and serial number
Commissioning (e.g. Setting the IP address, station name)
Backup/Restore
Diagnostics
Simplified programming through user-friendly new
instructions in LAD/FBD/STL
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2.6.1. SIMATIC S7-1500: Modules
Single-tier assembly max. 32 central modules in rack
Multi-tier distributed ET200MP
...
TM:
PS/PM CPU DI, DQ, PS - Counting
(optional) AI, AQ new power - Position sensing
segment
CM/CP:
- Point-to-Point max. 2 per rack
(RS232, RS485) for backplane bus supply of
- PROFIBUS subsequent I/O modules
- PROFINET
Slot Rules
1x PS/PM Slot 0
1x CPU in Slot 1
As of Slot 2 any
Signal Modules
Digital input modules: 24VDC, 230VAC
Digital output modules: 24VDC, 230VAC
Analog input modules: voltage, current, resistance, thermocouple
Analog output modules: voltage, current
Communication Modules (CP - Communication Processor, CM - Communication Module)
Point-to-Point connection
PROFIBUS
PROFINET
CPs and CMs are both communication modules.
CPs have, as a rule, somewhat more functionality than CMs (e.g. own web server,
firewall, or the like).
Technology Modules (TM - Technology Module)
Counting
Position sensing
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Power Supply
I/O modules in the central rack of the S7-1500 require a system power supply via the backplane
bus (communication connection to the CPU) and a load power supply (input or output circuits for
sensors/encoders and actuators).
PM - Power Module Load Power Supply
supplies modules with 24VDC for input and output circuits as well as sensors/encoders and
actuators
If the CPU is supplied 24V via a load power supply (PM), it supplies the system power
supply of 12W for the first inserted I/O modules.
PS - Power System System Power Supply
supplies S7-1500 modules in the central rack via the backplane bus
Each CPU offers a system power supply of 12W for the first inserted I/O modules.
Depending on the I/O modules used, further power segments have to be set up, as
required.
A system power supply (PS) can also supply the load circuit for 24VDC modules in
addition to the CPU.
Power Supply and Power Segments of the I/O Modules
It is necessary to set up power segments in the central rack for larger configurations or
configurations with greater I/O module power requirements (as a rule, when using CP, CM, TM).
A maximum of 3 power segments can be set up per rack (1xCPU segment plus 2 more).
If the configuration includes additional power segments, additional system power supply modules
(PS) are inserted to the right next to the CPU. The CPU continues to control all modules of the
rack. Only the system power supply of the I/O modules is subdivided here.
Example of a Small S7-1500 Configuration
Example of an S7-1500 Configuration with a 2nd. Power Segment
Interface Modules for Expansion Rack
There are no plans for a central multi-tier assembly. An expansion can be realized using the
distributed ET200MP I/O system.
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