Initialization - Allen-Bradley 1784-KTX Reference Manual

Chapter 2
Start up and Shutdown

Initialization

During initialization,
your program should:
2-12
Table 2.E
Loader Memory Map of Dual Port
Host Dual port Address
:0000h - :006Fh
:0070h
:0071h
:0072h
:0073h
:0074h
:0075h
:0076h - :007Fh
:0080h - :07FFh
Initialization responsibilities are divided between the host and the
KTx card.
Host Responsibilities
clear the dual port
RAM by writing 00
to each byte
Constant
FCh
FDh
FEh
wait for an interrupt from
the KTx before sending
any commands
When the interrupt occurs, check
or an error code.
SUCCESS
Dual-port locations
are defined in appendix A.
initialize the boot_code
by writing hex C3 00 00 00
into the dual port
Baud Rate
57.6k
115.2k
230.4k
write 01h to :802 to
start the KTx scanner
for
init_status
boot_code, link_baud_rate, link_address,
Dual port Contents
LOADPCL.BIN
Total Word (low byte)
Total Word (high byte)
Size Word (low byte)
Size Word (high byte)
Error Status
Handshake
LOADPCL.BIN
Load Space
select the baud rate by writing a
constant to link_baud_rate in
the dual port
select the link protocol by
writing 06h to link_protocoL
in the dual port
set the link address by
writing 0FDh to link_address
in the dual port
, i.e.,
init_in_progress
and
link_protocol