Verbs As Subroutines; Begin And End; Looping Verbs; Shift Verbs - Roper Photometric Owner's Manual

Verbs as Subroutines

Begin and End

Looping Verbs

Shift Verbs

You can think of verbs as camera functions or subroutines. A single-verb
instruction such as flash() or clear_until_trig() can be expanded into a
sequence of camera-specific instructions. Most verbs are directions for the
camera to perform the function immediately using the current settings.
There are two commands required for every script, if either command is
missing, the program sets an error code.
script_begin();
script_end(contin_clear);
specifies the start of the program. Anything appearing before
script_begin
is considered whitespace and is ignored by the script processor.
script_begin
Therefore you can insert comments at the head of a script without using
comment delimiters.
specifies that the script is finished, transmit to the camera. If
script_end
appears, the script processor will not continue to the null-
script_end
terminating character at the end of the input string.
Use the following verbs for looping:
loop_begin(loop_count);
loop_end();
All instructions occurring between these two verbs are executed loop_count
times. The mechanism that performs this communication is camera specific. On
most systems, built-in commands are used to perform looping. However, on
some systems, the instructions inside the loop may be duplicated loop_count
times. You can nest loops, up to 16 deep. For every loop_begin function, there
must be one loop_end instruction. If you create a different number of
and loop_end , it generates an error, and the script fails.
loop_begin
A shift verb tells the camera to immediately shift one or more lines in the
parallel register using the currently selected shifting mode.
A shift_mode verb changes the current state of the camera and specifies the
clocking method used during exposure (MPP or normal). The new state is
implemented the next time that the shift verb is executed.
shift_mode_is();
shift_mode_is_alt();
shift_mode_ism();
shift_mode_ism_alt();
shift_mode_s();
shift_mode_s_alt();
shift_mode_sm();
shift_mode_sm_alt();
Note that script_begin initializes the shift mode to shift_mode_is.
Chapter 2. ICL 5