Programming concepts
7.1 Guidelines for designing a PLC system
S7-1200 Programmable controller
184 System Manual, V4.2, 09/2016, A5E02486680-AK
Specify the operator
stations
Based on the requirements of the functional specifications, create the following drawings of the
operator stations:
• Overview drawing that shows the location of each operator station in relation to the process
or machine.
• Mechanical layout drawing of the devices for the operator station, such as display, switches,
and lights.
• Electrical drawings with the associated I/O of the PLC and signal modules.
Create the configura-
tion drawings
Based on the requirements of the functional specification, create configuration drawings of the
control equipment:
• Overview drawing that shows the location of each PLC in relation to the process or machine.
• Mechanical layout drawing of each PLC and any I/O modules, including any cabinets and
other equipment.
• Electrical drawings for each PLC and any I/O modules, including the device model numbers,
communications addresses, and I/O addresses.
Create a list of symbol-
Create a list of symbolic names for the absolute addresses. Include not only the physical I/O
signals, but also the other elements (such as tag names) to be used in your program.
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