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SM7100 Programming 29
DESCRIPTION OF SMIP II MODULE REGISTERS - A24 / A32 - EXTENDED MEMORY
Each module is assigned 1 k (1024) bytes of memory as shown in the SMIP II
Configuration/Relay Register Map for A24/A32 address space. The upper 512 bytes of memory
space is used for module configuration registers. The following describes these registers.
Control Register - Read and Write
ADDR
Plug-In LA+0x200
D15-D10 Unused
0 = Normal polarity relay data is read back from this module
1 = Inverted polarity relay data is read back from this module
Pon state = 0
VXI
Backplane
SMIP
Interface
Board
SMIP
Relay
Module
Write a "1" to
close relay
"1" to close
relay
Relay:
1 = Closed
0 = Open
"1"
"0" returned
from module
Relay Data
Read Back
Polarity Bit
0=non-inverted
1=inverted
w/ bit set to 0:
write a "1" =
"0" returned
w/ bit set to 1:
write a "1" =
"1" returned
10
D9
Relay Data
Read Back
Polarity Bit
This bit may be used to invert the relay data read back from the plug-in module.
Control, Delay, and Status Register read backs are not effected by this bit.
D8
ACFAILN
Enable Bit
0 = ACFAILN is enabled to reset this module's relays
1 = ACFAILN is disabled from resetting this module's relays
Pon state = 0