Et system LAB-HP/E 10KW, Руководство пользователя

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Ext. Control: USB (OPTION)
28 ET System electronic GmbH
EXT. CONTROL: USB (OPTION)
The USB interface provides a virtual COM port for the PC. Via this port, the unit can be controlled as with a normal
RS232 interface, e. g. with a terminal program. Corresponding drivers for all current operating systems are available as
download: http://www.ftdichip.com/Drivers/VCP.htm.
The status word can be read with the command
<STB>
or
<*STB?>
.
Bit Function
D15 Parity error
D14 Over run error
D13 Framing error
D12 Timeout error
D11 Echo on
D10 used internally, can be 1 or 0
D9 Hardware handshake (RTS/CTS)
D8 Software handshake (XON/XOFF)
D7 Parity enable
D6 Parity mode (1 = odd, 0 = even)
D5 Stop bit (1 = 2 Stop bits; 0 = 1 Stop bit)
D4 Data format (1 = 8 bit; 0 = 7 bit)
D3 used internally, can be 1 or 0
D2

Table
D1

Table
D0

Table
Table: Error messages
D2 D1 D0 Error
0 0 1 Syntax
0 1 0 Command
0 1 1 Range
1 0 0 Unit
1 0 1 Hardware
1 1 0 Read
The defined character for XON is 0 x 11 and for XOFF it is 0 x 13.
Interface parameters are adjusted by software with the command
<PCx>
and afterwards they can be saved with the
command
<SS>
.
Interface Reconfiguration
In case, the user has forgotten the active setup, there are two ways of reconfiguring the interface:

sending the command
<PCx>
from one of the other interfaces

using the display to configure the interface

Interface Parameters