Moeller XION-PLC-CANopen, Hardware, Engineering And Function Description

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02/05 AWB2724-1566GB
43
10 RS 232 interface in transparent mode
In transparent mode, the data transferred between the XN-PLC
and the data terminals (e.g. terminals, printers, PCs and
measuring instruments) is not interpreted. Switch the RS 232 serial
interface of the XN-PLC (COM1) into transparent mode with the
user program.
For the XN-PLC, this functionality is provided by the
XN_PLC_SysLibCom.lib or SysLibCom.lib library. The library must
therefore be included in the Library Manager.
The library contains functions for opening and closing the
interface, for sending and receiving the data and for setting the
interface parameters.
If transparent mode is active, no communication is possible with
the XSoft programming system. Transparent mode must first be
disabled. When transparent mode is closed, the original
communication parameters are re-initialized. The transparent
mode is forcibly deactivated when the PLC changes to the STOP
mode.
The functions are described in manual “Function Blocks for XSoft”
(AWB2786-1452GB).
h If the CPU’s RS 232 interface is in transparent mode,
programming through this interface is not possible.
h Because the interface’s control lines are not active, you
can not use the SysComReadControl and
SysComWriteControl functions.
Figure 72:Function summary