Rockwell Automation D17846.2.4 CONTROLNET KT EMULA - Manual (Page 18)

Publication 1784-6.2.4 - September 1997
2-2 What Your Driver Must Do at Start-up
Initializing the KTCX Card To bring the KTCX card in KT Emulation mode and communicating
on the network, follow these steps (See Appendix B for the defines):
1. Reset the hardware by performing the following sequence:
outportb( H186RESET, 0 );// hold the card in reset
outportb( H186RUN, 0 ); // start the card
2. Wait 4 seconds for the operating state to change to start-up.
3. Load the following sequence into the dual-port:
4. Release the card by writing a 1 to byte offset 0802h.
5. Monitor the offset 0012h (KTCX_alive flag until it transitions
from state 4 to state 2 at which time the card is online. This
process takes about 5 seconds.) If the keeper node is non-existent,
the KTCX_alive flag will stay in state 3 until a keeper node is in
the network. Once the card is online (KT alive flag = 2), PCCC
messages may be transmitted.
:0011h Reserved --- --- ---
:0012h KTCX_alive STAT 02h = KTCX is
functioning W R/W See KTCX Alive section in chapter one.
:0013h KTCX_dupe_node STAT 00h = KTCX address
Valid
01h = KTCX duplicate
found W R A value other than 00h means the installed KTCX
address is the same as another station on the link.
:0014h KTCX_off_KTCX CMD 01h = shutdown
KTCX
Note: First write 00h
to byte :0015h. R W Host command to KTCX to shut KTCX down. The
KTCX scans for 01h every 10 msec. However, if an
interrupt is used, then shutdown is preformed
immediately.
:0015h KTCX_stopped_flag STAT FFh = KTCX stopped W R/W This byte is responsible for shutting the KTCX card
down.
:0016h KTCX Module State INI N/A N/A N/A
➀ CMD = Command From Host to KTCX; DIAG = Diagnostic Counter; STAT=Status; INI = Initialization; N/A = Not Applicable
➁ R = Read; W = Write
Offset Value (Range) Comments
0000h 0xC3
0001h 0x00
0002h 0x00
0003h 0x00
0004h 0x00 on-line
0005h 1-99 node address
0014h 0x00 free from shutdown