Rockwell Automation D17846.2.4 CONTROLNET KT EMULA - Manual (Page 17)

Publication 1784-6.2.4 - September 1997
Chapter
2
What Your Driver Must Do at
Start-up
What This Chapter Covers This chapter explains the start-up requirements of the KTCX card.
Your driver must:
• Use the KTCX Memory-Mapped Hardware
• Initialize the KTCX Card
Using the KTCX
Memory-Mapped
Hardware Before you begin building your driver, you must be familiar with the
KTCX card's memory-mapped hardware. There are seven memory-
mapped addresses, but byte :0800h is reserved. The KTCX maps the
dual-port just like the 1784-KT. However, some functions such as
diagnostics are not required. These unnecessary functions are desig-
nated by “N/A”, not applicable. The following sections describe
memory-mapped hardware bytes :0801h through :0806h.
Table 2.A Initial State Memory Map of dual-port
Byte Description Function 1 Contents = Meaning
Typical Access
2
KTCX Host
Comments
:0000h KTCX KT
Emulation Mode INI C3h R W Your application must set these bytes to initialize the
KTCX card.
:0001h KTCX KT
Emulation Mode INI 00h R W
:0002h KTCX KT
Emulation Mode INI 00h R W
:0003h KTCX KT
Emulation Mode INI 00h R W
:0004h KTCX Link State INI FFh = off-line
00h = on-line R . W N/A
:0005h Link Address INI (node address) R W N/A
:0006h Link Protocol INI N/A N/A N/A
:0007h Link Baud Rate INI N/A N/A N/A
:0008h Link Termination
Resistor INI N/A N/A N/A
:0009h Reserved --- --- --- All reserved bytes must be set to 00h.
:000Ah Reserved --- --- ---
:000Bh Reserved --- --- ---
:000Ch Reserved --- --- ---
:000Dh Reserved --- --- ---
:000Eh Reserved --- --- ---
:000Fh Reset Diagnostic
Counters CMD N/A N/A N/A
:0010h Reserved --- --- --- All reserved bytes must be set to 00h.