Burster RESISTOMAT 2408, Руководство пользователя

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Model 2408
RESISTOMAT
®
Page 69
INPUT #2, y
IF y THEN
PRINT #1, “spoll 04”
INPUT #2, x
END IF
WEND
PRINT #1, “output 04;fetc?” ‘request data
PRINT #1, “enter 04” ‘get data
INPUT #2, c$
PRINT c$
PRINT #1, “output 04;system:lock 0” ‘enable front panel
PRINT #1, “local”
END
2.7.4 RS232 Interface
The 2408 instrument comes standard with an RS232 serial port interface, available through
a connector (9 pin) on the rear panel of the instrument, for connecting to a PC. The RS232
standard defines electrical specifications for the transmission of bit serial information. The
use of the RS232 port requires five lines: receive data, transmit data, data terminal ready,
data set ready and signal ground. With some controllers additional signals maybe required
and are listed in Table 2-6. Refer to Figure 2-34 for null modem cable configuration to the
standard db9 or db25 connector. Refer to Table 2.5 for the command set which also applies
to the RS232 interface. When using the RS-232 interface with a printer the IEEE-488.2
Mode must be set to
Talk
and the State to
Disable
.
Table 2-6: RS232 Interface Connections
Signal Name Pin Number Function
Input:
DCD 1 Data Carrier Detect
DSR 6 Data Set Ready
RXD 2 Receive Data
CTS 8 Clear to Send
RI 9 Ring Indicator
Outputs:
RTS 7 Request to Send
TXD 3 Transmit Data
DTR 4 Data Terminal Ready
GND 5 Signal Ground