Samson TROVIS 5571, Монтаж и эксплуатация

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2 Start-up
2.1 Programming
Programming the PLC requires a PC with ISaGRAF ® software.
The ISaGRAF
®
software enables you to program a control system that is tailored to the specific
needs of your plant (ISaGRAF ® development environment 1400-7621). Programming must fol-
low the structures and rules stipulated in IEC 61131-3. The PLC may be programmed with the
languages defined in the standard: Sequential Function Chart (SFC), Instruction List (IL), Flow
Chart (FC), Function Block Diagram (FBD), Ladder Diagram (LD), and Structured Text (ST).
There are 128 KB of memory available in the PLC for the ISaGRAF
® application.
The application is complied to machine code in the PC environment. This code is then trans-
ferred to the PLC over the front
RJ-45 jack (connecting cable 1400-7620).
Programming languages:
Sequential Function Chart
(SFC): Used to describe operations of a sequential process with a simple gra-
phic representation
Instruction List (IL): Low-level textual language for logic and arithmetic operations
Flow Chart (FC): High-level language used to visualize the data flow
Function Block Diagram
(FBD): Graphics-based language for building and combining complex functions
(logical, arithmetic)
Ladder Diagram (LD): Simple graphics-based language for logical operations (boolean)
Structured Text (ST): High level language similar to PASCAL and C especially designed for
control applications
For operation and application of the ISaGRAF ® environment, refer to the documentation in-
cluded in the software package. To enable simple and clear programming, ready-made func-
tions and function blocks, e.g. for boiler systems, heat exchanger sequence control, ventilation
systems, heating circuits or domestic hot water systems, are available from SAMSON.
Parameters * WE Settings level / Range of values
Station address 255 RS-232/Prog / 1 to 247, 255
Baud rate 9600 RS-232/Prog / 9600, 19200
* –> Section 5.3 (Description of communication parameters to be adjusted)
10
EB 5571 EN
Start-up