Measurement Computing Micro 488/EX rev.2.1 - Manual (Page 168)

Section 6 Controller Pass-Thru Operation
6.4
When the last IEEE bus terminator is detected from the IEEE device, the
Micro488/EX disables the device from sending additional information by asserting
Attention (ATN) on the bus.
If the IEEE device does not responded or finish transmission by the time
additional characters are received into the serial input buffer, the talk sequence will be
aborted to allow additional serial information to be sent to the IEEE device.
The following is an example of how this feature can be used to communicate with
a single IEEE instrument. The program example is written in Basic on an IBM PC or
compatible and communicates with a Keithley Model 196 DMM.
10 '
20 ' Example Program using Micro488/EX with
25 ' the Talk Back on Terminator Feature Enabled to
30 ' Communicate with a Keithley Model 196 DMM
40 '
50 ' Open Basic's serial communications port
60 OPEN "COM1: 9600,N,8,2" AS 1
70 ' Set the Model 196 DMM to the 30VDC range
80 PRINT #1,"F0R3X"; ' The ; suppresses terminators
90 ' Request 10 Readings from 196"
100 FOR N = 1 to 10
110
PRINT #1,"" ' Output terminator
120 LINE INPUT #1, A$ ' Get Reading from 196
130 PRINT A$ ' print it on the screen
140 NEXT N
150 END
6.5 Plotter Applications
To use the Micro488/EX to interface an HP-IB plotter to a serial computer port,
you will need the following information about your system.
1. The serial data format that the application (plotting or graphics)
program expects the plotter to communicate with. These parameters
include baud rate, word length, stop bits, parity and serial control.