Siemens Simatic M7-400 Manuale Utente Pagina 51

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Installing the M7 Programmable Control Systems
3-25
System Software for M7-300 and M7-400 Installation and Operation
C79000-G7076-C850-02
!
Caution
If you have set up a system console on one of the serial interfaces COM1/COM2
with the entry:
sysdev=BYT_COM1
you must not use this serial interface for communication with one of the loadable
drivers 3964R or SER8250, otherwise the output of the system console will be
controlled by the new driver. It is directed to the port and can cause conflicts with
the communications partner, for example, if an error message is output on the
system console.
RMOS DOS Section
Some of the entries which may be included in the RMOS DOS section are as follows:
[RMOS DOS] Identifies the RMOS DOS section
RESERVE_COMx This entry reserves COM1, COM2 and so on for M7 RMOS32.
Default:
REM RESERVE_COM2
Each default includes a comment; the COM2 interface is also
available for DOS.
Remove the comment initiation letters REM to reserve the COM2
interface exclusively for M7 RMOS32.
MAX_PORT_
NUMBER
This entry disables the port shadow.
Default:
MAX_PORT_NUMBER = 0XFFFF
The value is preset and may not be changed.
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