Rockwell Automation 1794-ASB/E Remote I/O Adapter Module User Manual - Manual (Page 38)

3–4 Communicating with FLEX I/O Modules
Publication 1794ĆUM009D-EN-P - April 2004
Input Word
Output Word
Standard Mode
Input Word
Output Word
Compact Mode
16Ćpt Density
16 bits of input OR
16 bits of output available
Input Word
Output Word
8 Bits 8 Bits
8 Bits
8 Bits
8 Bits 8 Bits
8 Bits
8 Bits
8 Bits 8 Bits
8 Bits
8 Bits
16 bits of input AND
16 bits of output available
8 Bits 8 Bits
8 Bits
8 Bits
8 Bits 8 Bits
8 Bits
8 Bits
8 Bits 8 Bits
8 Bits
8 Bits
Input ModuleExample Output ModuleExample
Digital I/O Modules
Compact Mode
8Ćpt Density
8 bits of input OR
8 bits of output available
Note: If 16Ćpt or 32Ćpt modules are used in 8Ćpt
compact addressing, only the information in
thelowest byte(8 bits) will besent to the
processor.
Input Word 0
Input Word 1
Standard - 32 Mode
8 Bits 8 Bits
8 Bits
8 Bits
32 bits of input AND
32 bits of output available
8 Bits 8 Bits
8 Bits
8 Bits
Input ModuleExample Output ModuleExample
Output Word 0
Output Word 1
8 Bits 8 Bits
8 Bits
8 Bits
8 Bits 8 Bits
8 Bits
8 Bits
Input ModuleExample Output ModuleExample
Note: If 32 pt. modules are used in standard
mode, only the lower word (16 bits) will be sent
to theprocessor. All 32 bits of the32-pt
combo moduleareavailable.
Note: If 32 pt. modules are used in 16 pt.
compact mode, only the low word (16 bits)
will besent to theprocessor.
Input ModuleExample Output ModuleExample
Input Word
Output Word 8 Bits 8 Bits
8 Bits
8 Bits
8 Bits 8 Bits
8 Bits
8 Bits
Complementary Mode
16Ćpt Density
16 bits of input OR
16 bits of output available
Input Word
Output Word 8 Bits 8 Bits
8 Bits
8 Bits
8 Bits 8 Bits
8 Bits
8 Bits
Primary Chassis
Complement Chassis
16Ćbit Input modules complemented by 16Ćbit output modules
Note: If 32Ćpt modules are used in 16Ćpt complimentary addressing,
only theinformation in thelower word will besent to theprocessor.
Input ModuleExample Output ModuleExample
Input ModuleExample Output ModuleExample