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7 ieee address selection, 1 listen only mode – Measurement Computing Micro 488/EX rev.2.1 User Manual

Page 181

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Section 7

Peripheral Pass-Thru Operation

7.9

7.7 IEEE Address Selection

SW3-1 through SW3-5 select the IEEE bus address of the Micro488/EX when in

the Peripheral Pass-Thru mode. The address is selected by simple binary weighting
with SW3-1 being the least significant bit and SW3-5 the most significant. The
following figure shows the IEEE address of the Micro488/EX set to 10.

SW3 View for IEEE Address Selection

OPEN

1 2 3 4 5 6 7 8

1

0

DOT

Switch

Side
View

0 x 16
1 x 8
0 x 4
1 x 2
0 x 1

= 0
= 8
= 0
= 2
= 0

+

IEEE Address = 10

7.7.1 Listen Only Mode

Listen Only is a special type of Peripheral operation. In the Listen

Only mode the Micro488/EX accepts all data transmitted on the bus and
transfers it out its serial port. The Micro488/EX is set to Listen Only mode
by setting its address to 31 (switches SW3-1 through SW3-5 all open).