Program Transfer to the S7
Programs generated with S7 for Windows® of course can be transferred to an S7-300® or S7-400® PLC.
Blocks displayed in the Block List window and marked S5 Format, can be transferred to an S7-300® or S7-400® PLC if the S5 Code is directly convertible into S7 code.
The automatic conversion takes place during the down load.
The transfer is done using a converter Cable (PC-MPI Cable) to connect the PC serial port (COM1-4) with the MPI Interface of the S7-300® or S7-400® PLC.
Downloaded PLC programs can be monitored and modified with S7 for Windows® (Status Mode).
The S5 code, converted during the download to the S7 CPU can still be monitored in the Status Display as native S5 code.
Separate windows are available to display the Interrupt Stack (I-Stack), the Block Stack (B-Stack), and the Diagnostic Buffer.
Online Functions
S7 for Windows® offers a full range of on-line functions to debug, test, and modify the PLC program transferred to the S7-300® or S7-400® PLC series.
The serial port (Com 1-4) of the PC must be connected with the PLC via the PC-MPI cable.
With the PLC connected on-line with the PC, the status of the signals are presented in the Statement List (STL) format. It is also possible to show the status of the signals is in the graphically displayed Function Blocks (Ladder Diagram or Control System Flowchart).
Logical true signals are indicated with a red line and false signals are displayed as a black dotted line.
The status of a signal may be changed with the click of the mouse or with the keyboard.
Not only can the status of the PLC be monitored in the graphical display, the status can be changed with the click of a mouse.
The PLC Block List window can display the S5 Name, the S7 Name, and the Format of the corresponding Block in the PC Block List.
The logic of a Block that has been opened from the PLC Block List window (Status or Editor) will be displayed with its syntax (S5 or S7) indicated in the PC Block List window (S5 Format or S7 Format).
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TCP/IP Protocol
With S7 for Windows® it is possible to set up a connection using a TCP/IP protocol to an S7 PLC. The connection may be accomplished via an Ether net bus system or via the Internet (Intranet).
The PC requires a standard Ether net Network board and the PLC needs hardware provided by the INAT company to connect to an Ether net bus system. The special driver required is already built into the S7 for Windows® software.
H1 (Industrial Ether net) Bus
An Advanced H1, connection using a standard Ether net network board to connect to the H1 Bus directly, is supported by S7 for Windows®. This method requires an additional software driver and a standard Ether net Network board to connect to the H1 Bus. The PLC requires an H1 communication processor (CPxxx).
With the optional driver software installed it is possible to activate the H1 Connection command from the option menu. From the dialog box you can select the PLC that you want to go on-line with. You can select any of the PLC's connected to the H1 Bus.
It is also possible to connect to the H1 bus without the special driver software. For this standard H1 connection, your PC must have a serial link to a Master PLC. The Master PLC is one of the PLC's connected to the H1 Bus. Via the master PLC you have access to any other PLC on the H1 Bus.