Z-World XP8600, User Manual

Page: 36 / 99

XP8600 36 s Software Reference
Use the following steps to run the sample program.
1. Compile the program by pressing
F3
or by choosing
Compile
from the
COMPILE
menu. Dynamic C compiles and downloads the program
into the controller’s memory. During compilation, Dynamic C rapidly
displays several messages in the compiling window, which is normal.
2. Run the program by pressing
F9
or by choosing
Run
from the
RUN
menu. It is also possible to single-step through the program with
F7
or
F8
.
3. To halt the program, press
<CTRL-Z>
.
4. To restart the program, press
F9
.
Check the board jumpers, PLCBus connections, and the PC/
controller communications if an error message appears.
See the Dynamic C Technical Reference manual for more
detailed instructions.
Functions in PBUS_LG.LIB
• int DAC_Board_Addr( int bd )
Converts a logical D/A converter board address to a physical PLCBus
address.
PARAMETER:
bd
must be a number between 0 and 63 representing
the D/A converter board to access. This number has the binary form
pppzyx where ppp is determined by the board PAL number and x, y,
and z are determined by jumper block J3 on the board. ppp values of
000, 001, 010, etc., correspond to PAL numbers of FPO4800,
FPO4810, FPO4820, etc.; x, y, and z correspond to jumper block J3
pins 1–2, 3–4, and 5–6, respectively (0 = closed, 1 = open). The
resulting address is in the form pppx001y000z.
RETURN VALUE: Nibble-interchanged PLCBus address of the board
specified. This address may be passed directly to
PBus12_Addr
.
• void write_DAC1( int val )
Writes data serially to DAC1 (U3) on the presently addressed XP8600.
The board address must have been set previously with a call to
PBus12_Addr
. A call to one of these functions must be followed by a
call to
latch_DAC1
—or its equivalent in user-supplied code—
otherwise no digital-to-analog conversion occurs.
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