METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS
Appendix A
DE304.09 Appendix 9A-8
Metro Baseline Re-Baseline: 04/20/10
Table 1 - SCADA Memory Map
STATUS
REGISTERS
Internal and remote
I/O status
information
nn words of CPU
status registers
RTU Health Register
SCADA
Communications
Watchdog
INPUT-MODULE1 32 bits
INPUT-MODULE2 32 bits
INPUT-MODULE3 32 bits
DISCRETE INPUT
INPUT-MODULE4 32 bits
OUTPUT-
MODULE1
32 words
OUTPUT-
MODULE1
32 words
DISCRETE OUTPUT
MAIN AND
EXPANSION
CHASSIS
ANALOG INPUT AINPUT-MODULE1 8 words
INPUT-MODULE1 32 bits
INPUT-MODULE2 32 bits
INPUT-MODULE3 32 bits
DISCRETE INPUT
INPUT-MODULE4 32 bits
OUTPUT-
MODULE1
32 words
DISCRETE OUTPUT
REMOTE I/O - 1
ANALOG INPUT AINPUT-MODULE1 8 words
INPUT-MODULE1 32 bits
INPUT-MODULE2 32 bits
INPUT-MODULE3 32 bits
DISCRETE INPUT
INPUT-MODULE4 32 bits
OUTPUT-
MODULE1
32 words
DISCRETE OUTPUT
REMOTE I/O - 2
ANALOG INPUT AINPUT-MODULE1 8 words
GATEWAY
INPUT
32 words
GATEWAY
OUPUT
32 words
CALCULATIONS 20 words
F Discrete Control Processing
1. The RTU software shall allow each discrete output to act as either a
momentary or maintained (latched) contact based on the value of its
associated buffered control word.
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