Rockwell Automation 1794-XXXX FLEX I/O High-Density Analog Modules - Manual (Page 70)

Publication 1794-UM062A-EN-P - September 2012
62 Data Tables
S Analog Data – Output Channel 3 Write word 4
QS 0 0 0 CAB C89 C67 C45 C23 C01 Write word 5
Where: PU = Power up bit
FP = Field power fault
GF = General fault
NU = Not used
Wx = Wire off (x = associated channel)
Rx = Out of range (x = associated channel)
EN = Enable outputs
S1/S0 = Safe state source - When EN = 0, these bits indicate source of safe state output.
WR = Wire-off reset
QS = Quick step bit - allows input filter to be reduced during rapid signal changes.
Cxx = Channel Configuration (xx = associated channel pair)
Memory Map – 1794-IE8XOE4 Analog Combo Module
Decimal Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Size
Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 Read/Write Words
Range Selection Bits – 1794-IE8XOE4 Analog Combo Module
Range Out of Range Range Setting Cxx Channel
Configuration
-10…+10V DC 1< -10.0V or > 10.0V Set bits for each
channel pair
00 = off
01 = 0…20 mA
10 = 4…20 mA
11 = ±10V C01 for channels 0 and 1
C23 for channels 2 and 3
C45 for channels 4 and 5
C67 for channels 6 and 7
C89 for channels 8 and 9
CAB for channels 10 and 11
4…20 mA <4.0 mA or >20.0 mA
0…20 mA <0.0 mA or >20.0 mA
Where: Cxx = associated channel pair.
Safe State Selection Bits – 1794-IE8XOE4 Analog Combo Module
S1/S0 Safe State
Select Source Safe State Mode Safe State Output Behavior
S1 S0
0 0 Safe State value is in the
output words Outputs use Safe State value
0 1 Reserved (Safe State value
is in the output words) Reserved (Outputs use Safe State
value)
1 0 Clear/Reset the outputs,
based on range selected +10V range – Output set to 0V
4…20 mA range – Output set to 4 mA
0…20 mA range – Output set to 0 mA
1 1 Hold output at its present
level Outputs Hold Last State