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Measurement Computing Digital232 User Manual

Page 54

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Appendix A

Digital232 Command Summaary

A.2

Handshake

H0

Pulse the Clear line

H1

Pulse the Strobe line

H2

Pulse the Trigger line

Inhibit

Q0

Clear Inhibit line

Q1

Set Inhibit line

Invert I0

All control line outputs are active high

I1

Inhibit output is active low

I2

Trigger output is active low

I4

Data Strobe output is active low

I8

Clear output is active low

I16

Data is low true

I32

EDR input is falling-edge sensitive

I64

Service input is falling-edge sensitive

Port

P0

All ports selected

P1

Port 1 selected

P2

Port 2 selected

P3

Port 3 selected

P4

Port 4 selected

P5

Port 5 selected

Reset

@

Reset the Digital232 to power-on conditions

SRQ

M0

SRQ is disabled

M1

SRQ on Service Input transition

M2

SRQ on EDR input transition

M4

SRQ on command error

Status

U0

Send Status information when next addressed to
talk (*.*C#E#F#G#I###M#P#R#Y#)

Un

Read state of bit n (1 thru 40)

Terminator Y0

CR LF

Y1

LF CR

Y2

CR only

Y3

LF only