Allen-Bradley Compact I/O 1769-ADN DeviceNet, User Manual

Page: 46 / 204

Publication 1769-UM001B-EN-P - October 2002
2-22 How Communication Takes Place and I/O Image Table Mapping
Input Array
The Input Array, which consists of 35 words, allows read-only access
to the module’s input data via word and bit access.The Input Array is
described below. The functions are described in more detail in the
sections following the table.
20 Range12To15[1].OutputControl Range Output Control
21
Not Used Inv Not Used LDW Type Not Used ToThisCtr
Range Configuration
Flags
22
Range12To15[2].HiLimOrDirWr
Range High Limit or
Direct Write Value
23
24
Range12To15[2].LowLimit Range Low Limit
25
26 Range12To15[2].OutputControl Range Output Control
27
Not Used Inv Not Used LDW Type Not Used ToThisCtr
Range Configuration
Flags
28
Range12To15[3].HiLimOrDirWr
Range High Limit or
Direct Write Value
29
30
Range12To15[3].LowLimit Range Low Limit
31
32 Range12To15[3].OutputControl Range Output Control
33
Not Used Inv Not Used LDW Type Not Used ToThisCtr
Range Configuration
Flags
Word
Bit
Function
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
IMPORTANT
During the non-run states (program and fault), the
module continues to update the Input Array
(continues counting, etc). Depending on the bus
master, you may not see this.
TIP
Status bits for a particular counter reflect the
configuration settings for that counter. To receive
valid status, the counter must be enabled and the
module must have stored a valid configuration for
that counter.
Word
Bit
Function
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
0 Not Used Z1 B1 A1 Z0 B0 A0 Input State
1 Readback.0 through Readback.15 Readback
2
InvalidRangeLimit12
through
InvalidRangeLimit15
InvalidCtrAssignToRange12
through
InvalidCtrAssignToRange15
Gen
Error
Invalid
Output
Mod
Config
Not Used
Out0Overcurrent through
Out3Overcurrent
Status Flags