Setup guide
Chapter 3 Driver and Protocol Objects
©
Automationdirect.com 3-7 Object Reference Manual
Baud rate (1784-KTx, 1784-PCMK, 5136-SD only) selects the baud rate
of the DH+ network. The default is 57.6k baud. Before selecting a higher
baud rate, be aware of that only a few PLCs (such as the SLC5/04) support
higher baud rates; that every node on a DH+ network must support the baud
rate used on that network; that the maximum network cable length is
smaller for higher baud rates; and that the correct values for the termination
resistors at the ends of the network cable are different for higher baud rates.
Consult the manuals that came with your hardware for more detailed
information.
Table 3-1. Allen-Bradley DH+ Interface Memory Addresses
Memory
Address
AB 1784-KT
Exclude
AB 1784-KTx
1784-PCMK
Exclude
SS-5136-SD
Exclude*
Recommendation
A000 A300-A3FF A000-A0FF A000-A3FF Typically used by VGA
drivers. Use if no other
option is available.
A400 A700-A7FF A400-A4FF A400-A7FF
A800 AB00-ABFF A800-A8FF A800-ABFF
AC00 AF00-AFFF AC00-ACFF AC00-AFFF
B000 B300-B3FF B000-B0FF B000-B3FF Used by MDA & CGA
drivers. Use if no Dxxx
option is available.
B400 B700-B7FF B400-B4FF B400-B7FF
B800 BB00-BBFF B800-B8FF B800-BBFF
BC00 BF00-BFFF BC00-BCFF BC00-BFFF
C000 C300-C3FF C000-C0FF C000-C3FF Typically used by BIOS.
Use if no Dxxx option is
available.
C400 C700-C7FF C400-C4FF C400-C7FF
C800 CB00-CBFF C800-C8FF C800-CBFF
CC00 CF00-CFFF CC00-CCFF CC00-CFFF
D000 D300-D3FF D000-D0FF D000-D3FF Normally available.Try to
use one of these first.
D400 D700-D7FF D400-D4FF D400-D7FF
D800 DB00-DBFF D800-D8FF D800-DBFF
DC00 DF00-DFFF DC00-DCFF DC00-DFFF
* The 5136-SD memory exclusions recommended here are based on 16K memory mapping. Because you are using the
SS card to emulate the KT card, there is no advantage to using its 32K memory access capability.