Measurement Computing Serial488/4 - Manual (Page 50)

Section 3 Command Descriptions
3.11
Data EOI Ln
The Data EOI command specifies how the IEEE 488 EOI line will be used
when the Serial488/4 sends serial port data to the addressed listener, usually the bus
controller, for the selected serial port. The Port Select command (Pn) is used to
select the serial port regardless of addressing mode in use. In the L0 mode, the EOI
line is asserted by the Serial488/4 when the data byte matches the selected serial
terminator (Txxx). In the L1 mode the EOI line is not used. If the L2 mode is
selected, the EOI line is asserted when the last serial input character is sent over the
IEEE bus. In the L3 mode the EOI line is asserted on either a match with the serial
terminator or the last serial character sent. The factory default setting as set by the
Save Configuration command (S0) is L1, EOI is disabled.
L0
Assert EOI on serial terminator character.
L1 EOI
is disabled.
L2
Assert EOI on last serial input character.
L3
Assert EOI on serial terminator character or last serial character.
L?
Returns last Data EOI command selected.
Example 1: Select EOI on serial terminator using dual primary addressing mode.
PRINT#1,"OUTPUT08;P1X" select port 1 as the current port
PRINT#1,"OUTPUT08;L0X"
select data EOI on serial terminator
Example 2: Disable EOI on selected port using secondary addressing mode.
PRINT#1,"OUTPUT0800;p1L1X"
disable EOI on port 1