Rockwell Automation Publication 1769-IN088A-EN-P - February 2011 145
I/O Memory Mapping Chapter 3
The bits are defined as follows:
• E = Channel Enable: (0 = Disabled, 1 = output 0 and hold Enabled,
process changes)
• Reserved = Set to zero
• SIU = System interrupt low clamp, under-range alarms: (0 = Disabled,
1=Enabled)
• SIO = System interrupt high clamp, over-range alarms: (0 = Disabled,
1=Enabled)
• LA = Latch low/high clamp, under/over-range alarms: (0 = Disabled,
1=Enabled)
• ER = Enable ramping: (0 = Disabled, 1 = Enabled. Ramp rate limited by
fault states.)
• FM = Fault mode: (0 = Hold Last State, 1 = User Defined Value)
• PM = Program mode: (0 = Hold Last State, 1 = User Defined Value)
• HI = Hold for initialization: (0 = Disabled, 1 = Enabled)
• PFE = Program/idle to fault enable: (0 = Disabled, 1 = Enabled)
21 Channel 2 High Clamp 45 Channel 5 High Clamp
22 Channel 2 Ramp Rate 46 Channel 5 Ramp Rate
23 Channel 2 Spare 47 Channel 5 Spare
Word Description Word Description
48 Channel 6 Configuration Word 0 56 Channel 7 Configuration Word 0
49 Channel 6 Configuration Word 1 57 Channel 7 Configuration Word 1
50 Channel 6 Fault Value Word 58 Channel 7 Fault Value Word
51 Channel 6 Program Idle Mode Word 59 Channel 7 Program Idle Mode Word
52 Channel 6 Low Clamp 60 Channel 7 Low Clamp
53 Channel 6 High Clamp 61 Channel 7 High Clamp
54 Channel 6 Ramp Rate 62 Channel 7 Ramp Rate
55 Channel 6 Spare 63 Channel 7 Spare
Word
Bit Position
1514131211109876543210
0 E Reserved SIU SIO LA ER FM PM HI PFE
1 Reserved Output Data
Format Select
Reserved Output Type/
Range
Word Description Word Description
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