Channel configuration words – Rockwell Automation 1769-OF4VI CompactLogix Module User Manual
Page 20
20 Compact 1769-OF4VI Isolated Analog Output Module
Rockwell Automation Publication 1769-IN076B-EN-P - August 2010
Channel Configuration Words
•
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)
•
HI = Hold for initialization: (0 = Disabled, 1 = Enabled)
•
PFE = Program/idle to fault enable: (0 = Disabled, 1 Enabled)
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.
Word/Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word 0
E
Reserved
SIU SIO LA
ER
FM
PM
HI
PFE
Word 1
Reserved
Output Data
Format Select
Reserved
Output
Type/Range
Define
Indicate
this
These bit settings
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Program
(Idle) to Fault
Enable
Program (Idle)
Mode Data
Applied
(1)
0
Fault Mode
Data
Applied
(1)
1