Rockwell Automation 1794-IF4I FLEX I/O 4 Isolated Input Module - Manual (Page 4)

4 FLEX™ I/O Isolated Input Analog Module
Publication 1794-IN038E-EN-P - November 2011
1794-TBN Terminal Base Wiring
Input Map
Dec 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Oct 17 16 15 14 13 12 11 10 7 6 5 4 3 2 1 0
Word 0 Analog value channel 0
Word 1 Analog value channel 1
Word 2 Analog value channel 2
Word 3 Analog value channel 3
Word 4 Real-time sample
Word 5 PU FP CF 0 Reserved 0 0 0 0 0 BD DN 0
Word 6 0 0 0 0 0 0 0 0 V3 V2 V1 V0 U3 U2 U1 U0
Where: PU = Power up inconfigured 
FP = Field power off 
CF = In configuration mode 
BD = Bad calibration 
DN = Calibration accepted 
U = Underrange for specified channel 
V = Overrange for specified channel
Output Map
Dec 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Oct 17 16 15 14 13 12 11 10 7 6 5 4 3 2 1 0
Word 0 EN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Word 1 Channel 3 filter Channel 2 filter Channel 1 filter Channel 0 filter
Word 2 Ch 3 configuration Ch 2 configuration Ch 1 configuration Ch 0 configuration
Word 3 0 Real-time sample interval
Word 4 IC 1 TR IT 0 0 0 0 RV QK CK GO Channel number
Word 5 Reserved
Where: EN = Inable bit (not used on input module) 
IC = Initiate configuration bit 
TR = Transparent bit 
IT = Interrupt toggle bit 
RV = Revert to default bit 
QK = Quick calibration 
CK = Calibration clock 
GO = Gain offset select
I
+
+
+
+
+
+
+
I
I +
+ -
-
16 10
11
12
13
14
15
33
51 34
0 2 4
1
6 8
3 5 7 9
45752
Even-numbered terminals 0...14 16 33
34 51
Row B
Row C
DC only
3-wire
transmitter
Current only
2-wire current
transmitter
DC only AC or DC
4-wire current
transmitter
Current
input Current
input Current
input
Voltage
input
3-wire
transmitter
Configure the Input Channels
Input Channel Configuration
03 02 01 00 Set these bits for channel 0
07 06 05 04 Set these bits for channel 1
11 10 09 08 Set these bits for channel 2
15 14 13 12 Set these bits for channel 3
Bit Settings Input Values Data Format % Underrange 
% Overrange
Input Range
0 0 0 0 Channel not configured
0 0 0 1 4...20 mA Signed 2’s
complement 4% under; 4% over <0000…7878>
0 0 1 0 ±10V 2% under; 2% over <831F…7CE1>
0 0 1 1 ±5V 4% under; 4% over <8618…79E8>
0 1 0 0 0...20 mA Signed 2’s
complement % 0% under; 4% over 0…10000>
0 1 0 1 4…20 mA 4% under; 4% over <0…10000>
0 1 1 0 0…10V 0% under; 2% over 0…10000
0 1 1 1 ±10V 2% under; 2% over <-10000…10000>
1 0 0 0 0…20 mA Binary 0% under; 4% over 0000…F3CF
1 0 0 1 4…20 mA 4% under; 4% over 0000…F0F1
1 0 1 0 0…10V 0% under; 2% over 0000…F9C2
1 0 1 1 0…5V 0% under; 4% over 0000…F3CF
1 1 0 0 +20 mA Offset binary, 
8000H = 0 mA
4% under; 4% over <0618…F9E8>
1 1 0 1 4…20 mA Offset binary, 
8000H = 4 mA
4% under; 4% over <8000…F878>
1 1 1 0 ±10V Offset binary, 
8000H = 0 mA
2% under; 2% over <031F…FCE1>
1 1 1 1 ±5V 4% under; 4% over <0618…F9E8>
Input Update Rate for Real Time Sample Interval = 0
Configuration Bits Input Nominal Ranges Channel Update Rate (1)
MSD LSD RTSI = 0 and No Low
Pass Filter RTSI and Filter = 0 
IT Bit = 1
0 0 0 1 4...20 mA 7.5 ms 5.0 ms
0 0 1 0 ±10V 2.5 ms 2.5 ms
0 0 1 1 ±5V 2.5 ms 2.5 ms
0 1 0 0 0...20 mA 7.5 ms 5.0 ms
0 1 0 1 4…20 mA 7.5 ms 5.0 ms
0 1 1 0 0…10V 5.0 ms 5.0 ms
0 1 1 1 ±10V 5.0 ms 5.0 ms
1 0 0 0 0…20 mA 2.5 ms 2.5 ms
1 0 0 1 4…20 mA 7.5 ms 5.0 ms
1 0 1 0 0…10V 2.5 ms 2.5 ms
1 0 1 1 0…5V 2.5 ms 2.5 ms
1 1 0 0 +20 mA 2.5 ms 2.5 ms
1 1 0 1 4…20 mA 7.5 ms 5.0 ms
1 1 1 0 ±10V 2.5 ms 2.5 ms
1 1 1 1 ±5V 2.5 ms 2.5 ms
(1) When IT = 1, the channel update rate for all channels is determined by the slowest channel.
Set the Input Filters
Input Channel Configuration
03 02 01 00 Set these bits for channel 0
07 06 05 04 Set these bits for channel 1
11 10 09 08 Set these bits for channel 2
15 14 13 12 Set these bits for channel 3
Bit Settings A/D Conversion Rate Low Pass Filter
0 0 0 0 1200 Hz No low pass
0 0 0 1 1200 Hz 100 ms low pass
0 0 1 0 1200 Hz 500 ms low pass
0 0 1 1 1200 Hz 1000 ms low pass
0 1 0 0 600 Hz No low pass
0 1 0 1 600 Hz 100 ms low pass
0 1 1 0 600 Hz 500 ms low pass
0 1 1 1 600 Hz 1000 ms low pass
1 0 0 0 300 Hz No low pass
1 0 0 1 300 Hz 100 ms low pass
1 0 1 0 300 Hz 500 ms low pass
1 0 1 1 300 Hz 1000 ms low pass
1 1 0 0 150 Hz No low pass
1 1 0 1 150 Hz 100 ms low pass
1 1 1 0 150 Hz 500 ms low pass
1 1 1 1 150 Hz 1000 ms low pass