Channel configuration words – Rockwell Automation 1769-XXXX Compact I/O Modules User Manual
Page 137
Rockwell Automation Publication 1769-IN088A-EN-P - February 2011
137
I/O Memory Mapping Chapter 3
Channel Configuration Words
The first two words of each eight word group in the configuration file allow you
to change the parameters of each channel independently. For example, words 8
and 9 correspond to channel 1 while words 16 and 17 correspond to channel 3.
The bits are defined as follows:
• E = Channel Enable: (0 = Disabled, 1 = output 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)
Word
Description
Word
Description
0
Channel 0 Configuration Word 0
16
Channel 2 Configuration Word 0
1
Channel 0 Configuration Word 1
17
Channel 2 Configuration Word 1
2
Channel 0 Fault Value Word
18
Channel 2 Fault Value Word
3
Channel 0 Program Idle Mode Word
19
Channel 2 Program Idle Mode Word
4
Channel 0 Low Clamp
20
Channel 2 Low Clamp
5
Channel 0 High Clamp
21
Channel 2 High Clamp
6
Channel 0 Ramp Rate
22
Channel 2 Ramp Rate
7
Channel 0 Spare
23
Channel 2 Spare
8
Channel 1 Configuration Word 0
24
Channel 3 Configuration Word 0
9
Channel 1 Configuration Word 1
25
Channel 3 Configuration Word 1
10
Channel 1 Fault Value Word
26
Channel 3 Fault Value Word
11
Channel 1 Program Idle Mode Word
27
Channel 3 Program Idle Mode Word
12
Channel 1 Low Clamp
28
Channel 3 Low Clamp
13
Channel 1 High Clamp
29
Channel 3 High Clamp
14
Channel 1 Ramp Rate
30
Channel 3 Ramp Rate
15
Channel 1 Spare
31
Channel 3 Spare
Wo
rd
Bit Position
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
E
Reserved
SIU
SIO LA
ER
FM
PM
HI
PFE
1
Reserved
Output Data
Format Select
Reserved
Output Type/
Range