Campbell Measurement and Control Module CR10 Operator's Manual page 176

else
04: P83 If Case Location < F
01: 77.3 F
02: 30 Then Do
05: P30 Z=F
01: 0 F
02: 0 Exponent of 10
03: 25 Z Loc :
06: P95 End Then Do
07: P95 End of Case Statement
*** 94 ELSE ***
FUNCTION
When Command 30 (Then/Else) is used with
an If Instruction, the Else Instruction is used to
mark the start of the instructions to execute if
the test condition is false (Figure 3.8-1). The
Else Instruction is optional; when it is omitted, a
false comparison will result in execution
branching directly to the End Instruction.
Instruction 94 has no parameters.
*** 95 END ***
FUNCTION
Instruction 95 is used to indicate the end/return
of a subroutine (Instruction 85), the end of a
loop (Instruction 87), the end of an If Then/Else
sequence (Instructions 88-92 when used with
command 30), or the end of a Case sequence
(Instruction 93). The End Instruction has no
parameters.
*** 96 ACTIVATE SERIAL DATA OUTPUT ***
FUNCTION
Instruction 96 is used to activate tape, Storage
Module (SM192/SM716 or Card Storage
Module), or serial data (printer) output.
Normally Instruction 96 is placed in the program
table after all Output Instructions have been
entered and is executed each time the Table is
executed. In this situation any data sent to
Final Storage is output as soon as possible.
However, by using Program Control
Instructions to allow execution of Instruction 96
only at certain times, the user can control when
the output device(s) are active. Instruction 96
allows a choice of serial data format and the
selection of Addressed or Pin Enabled device
for the serial print output.
SECTION 12. PROGRAM CONTROL INSTRUCTIONS
A single parameter is used to select whether
the instruction is to control the tape, "printer", or
Storage Module output, and if the printer is
selected, the format and baud rate. The
Instruction must be entered separately for each
device that is to receive output.
If both Final Storage areas are in use,
Instruction 96 will send data from the area
which is currently active. Final Storage Area 1
is active at the start of each Table. Instruction
80 can be used to change the active area. The
Area set by Instruction 80 remains active until
changed by another Instruction 80 or the Table
ends (at which time Area 1 becomes the active
Area 1). Instruction 80 can also direct output to
Input Storage, in which case Instruction 96
assumes Final Storage Area 1.
If the CR10 is already communicating on the 9-
pin connector when Instruction 96 is executed,
the output request is put in a queue and
program execution continues. As the 9-pin
connector becomes available, each device in
the queue will get its turn.
The request is not put in the queue if the same
device is already in the queue. The data
contained in the queue (and which determine a
unique entry) are baud rate (if applicable), and
the Final Storage Area. Instruction 98 to send
characters also uses this queue.
When an entry reaches the top of the queue,
the CR10 sends all data accumulated since the
last transfer to the device up to the location of
the DSP at the time the device became active
(this allows everything in the queue to get a
turn even if data is being stored faster than it
can be transferred to a particular device).
Tape output code 00 will not activate the tape
until at least 512 Final Storage Locations have
been stored. Code 09 will cause any data
between the TPTR and the DSP (location at
time Instruction 96 is executed) to be written to
tape. Code 00 is used for most tape
applications (Section 4.1).
The "other Final Storage Area" device option (the
non-active area) allows a "fast" Final Storage area to
be transferred to the main area on some trigger
condition so there is some history recorded prior to
the trigger condition (Section 8.8).
12-7