Philips System 21 Quick Operating Manual page 21

Requested data Command data Description
Response data
•
~!ingmode "M ?"
Ask current operating mode .
Response:
"Mn"
Mode n is selected.
Example:
" M2"
Selected operating mode 2.
0
Trigger-mode
" TAG?" Read current trigger-mode.
Response: "TAG R" Trigger if ready mode.
"TAG U" Trigger unconditional mode.
•
Execution mode
"E ?"
Ask current execution mode.
Response: "E U" Execute Unconditional mode.
" EX" Execute on " X" mode.
" E T"
Execute on trigger mode.
•
Ready-line
control mode
" R ?" Ask ready-line control mode.
Response: " R E" Ready-line control Enabled.
" R D"
Ready-line control Disabled.
0
Event mask
" MSK ?"
Read current System 21 event
Response: " MSK
" +
< 9 digits > mask. Indicates which events set
the abnormal bit (AB) together with
the EF3 bit in the Serial Poll byte.
digits: " 1" A slave had a power fail , received
a power-on reset or received an
illegal code or illegal sequence.
" 2"
An addressed module is not
present.
"3"
All units became ready performing
the programmed actions.
"4"
All units are ready with the
received data and may receive
new data.
"5"
A unit has data available.
" 6"
All units are ready with the block
or scan .
"7"
A unit has a warning .
"8"
The ready-line became high (ready
true) .
" 9"
A trigger-pulse was captu red on
the trigger-line.
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