Et system LAB-HP/E Series - Ext. Control: USB; Interface Reconfiguration

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