Measurement Computing Micro488/p - Manual (Page 22)

3-4 09-27-02 Command Descriptions
3.2.2 Response
This portion of the command description describes the response that the user's
program should read from the serial host's COM port after sending the command. If
a response is provided, it must be read to maintain proper program seqence.
3.2.3 Bus States
This portion of the command description describes the bus command and data
transfers using IEEE bus mnemonics as listed in the following table.
Bus States DIO lines
8 7 6 5 4 3 2 1
ATN Attention
data Data String
DCL Device Clear x 0 0 1 0 1 0 0
GET Group Execute Trigger x 0 0 0 1 0 0 0
GTL Go To Local x 0 0 0 0 0 0 1
IFC Interface Clear
LAG Listen Address Group x 0 1 a d d r n
LLO Local Lock Out x 0 0 1 0 0 0 1
MLA My Listen Address x 0 1 a d d r n
MTA My Talk Address x 1 0 a d d r n
REN Remote Enable
SDC Selected Device Clear x 0 0 0 0 1 0 0
SPD Serial Poll Disable x 0 0 1 1 0 0 1
SPE Serial Poll Enable x 0 0 1 1 0 0 0
SRQ Service Request
TAG Talker Address Group x 1 0 a d d r n
UNL Unlisten x 0 1 1 1 1 1 1
UNT Untalk x 1 0 1 1 1 1 1
x = "don't care"
addrn = IEEE bus address “n”