Rockwell Automation 1784-KTS_KTX_KTXD User Manual Communication Interface Card - Manual (Page 18)

2-2 Configure the Card Hardware
1784-6.5.22 - November 1999
Important: When selecting configuration settings, check for conflicts with
other interface cards and system memory. If there is a conflict, the
system will not operate properly. To avoid the conflict, you must
change the base address of the channel via rotary switch settings to
an open memory address.
Important: If you have a 386, 486, or Pentium host computer, you must find a
way to disable caching and shadow memory for at least the 4K of
memory space occupied by the KTx. This can usually be
accomplished through your CMOS set-up program or memory
manager, and must be done before running application with the
KTx card.
To configure the base memory address, you turn rotary switches on the
1784-KTx card.
1. Determine addresses for the channel(s) on your KTx card.
A. Use Table 2.A on page 2-3 to determine the recommended memory
address settings for your Allen-Bradley products.
B. Use Table 2.B on page 2-4 to determine which addresses are available for
the KTx card channel(s).
!
ATTENTION: If you have a two-channel card, you must set the base
addresses to different values—each channel must have a unique address.
Setting the base addresses to the same address can damage the KTx card.
If another card or channel is already using a channel’s default
memory address, you must pick a new address for the channel.
Each channel on each card must have a separate and unique
address.