
113
“Holding Registers”
Local AO1 & AO2 - Analog Outputs
Space for locally attached WI-I/O-EX-1-S Expansion I/O modules.
20 register per module address, maximum number of modules is
24
(See Appendix C: below for details)
General purpose word storage area – used for:
Staging area for data concentrator
Fieldbus Mappings storage
Local Pulsed Outputs 1-4. Big Endian Format.
Most significant word at lower / odd address.
Local Analog outputs as floating point values
Modscan Format (Sign + Exponent + Most significant 7 bits of
significand at Even / Higher Addressed location. Lower 16 bits of
significand at lower / Odd addressed location)
(12.3 => 48001=0xCCCD, 48002=0x4144)
Spare space for floating point values
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