Measurement Computing Serial488/4 - Manual (Page 62)

Section 3 Command Descriptions
3.23
The format of the status byte returned by the Serial488/4 after receiving a
U1
through U4 command is as follows:
*.*A#B#C#D###G#I#####L#N#O#####Q#T###U#
where each # equals the number corresponding to that command. The leading
information *.* is the revision level of the Serial488/4 firmware.
Example 1: Read Serial488/4 command status using secondary addressing mode.
DIM A$(50)
dimension A$
PRINT#1,"OUTPUT0800;S0X"
restore Serial488/4 defaults
PRINT#1,"CLEAR0800" reset the Serial488/4
PRINT#1,"OUTPUT0800;U1X"
send U1 to the Serial488/4
PRINT#1,"ENTER0800"
INPUT#2,A$
read the port 1 status message
PRINT A$
shows
1.0A0B009C0D1G0I00000L1N0O00000Q0T010U1
Below is a summary of the Command Status (U0) information.
E#
Error Message
E0
No error
E1
Unrecognized command (ex. W3)
E2
Illegal command option (ex. F8)
E3
Conflict (handshake type, handshake control, baud select)
K#
End Or Identify
K0
EOI enabled on last byte of status message
K1
EOI disabled
M###
Service Request
M0
SRQ is disabled
M1
SRQ on serial port #1 data in
M2
SRQ on serial port #2 data in
M4
SRQ on serial port #3 data in