Secondary Address Output Methods

Some GP-IB devices have the secondary address in addition to the primary address. The followings are the command output methods for those devices.

-1 Sending

$image\CJ005_1_wmf.gif$

- MTA(My Talker Address)

(MTA=Address of Board OR 40h)

- UNL(Unlisten)

(UNL=3Fh)

- LA(Listener Address)

(LA=Destination device primary address OR 20h)

- SA(Secondary Address)

(SA=Destination device secondary address OR 60h)

$image\head10.gif$ Example If my address is 7, the destination device primary address is 9 and secondary address is 3, transmit the command in the order of 47H, 3FH, 29H and 63H.

$image\head10.gif$ Processing Sends the secondary address (transmit the command)

$image\ARROW.gif$

Sends data (number of commands=0)

-2 Receiving

$image\CJ005_2_wmf.gif$

- TA(Talker Address)

(TA=Destination device primary address OR 40h)