Et system LAB-HP/E 10KW, Manual

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Ext. Control: Computer
20 ET System electronic GmbH
RS232 I
NTERFACE
The connection of the RS232 interface is carried out with a 9pin sub D connector. A null modem cable must be used as
connector cable.
No Name Function
1 N.C.
2 TxD Data line from unit to PC
3 RxD Data line from PC to unit
4 N.C.
5 GND GND
6 N.C.
7 CTS
Reception of the PC, signal direction from PC to unit
(only required for active Hardware handshake)
8 RTS
Reception of the unit, signal direction from unit to PC
(only required for active Hardware handshake)
9 N.C.
The interface can be operated using the following parameters:
Baud rate:
1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600, 62500, 115200
Parity: O = Odd = uneven parity
E = Even = even parity
N = None = no parity bit
Number of data bits: 7 or 8
Number of stop bits: 1 or 2
Handshake: H = Hardware
S = Software
N = None (no handshake)
The defined character for XON is 0 x 11 and for XOFF it is 0 x 13.
Interface parameters in delivery state are 9600 baud, no parity, 8 data bits, 1 stop bit, echo on. The status word can be
read with the command
<STB>
or
<*STB?>
. The following functions are assigned to the bits:
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