Specifications – Rockwell Automation 1794-IB16D_OB16D Flex I/O 16 Input and 16 Output w/Diagnostics Module Installation Instructions User Manual
Page 4
4
Publication 1794-IN096B-EN-P - February 2004
Sensor Diagram for the 1794-IB16D
Sensor Diagram for the 1794-OB16D
Configuration
Configuring Your 1794-IB16D Input Module
Configure your input module by setting bits in the configuration word
(word 3). This module is compatible with the Remote I/O network
(with 1794-ASB series E or later), DeviceNet network, and the
ControlNet network. (Note: You must use the Module Connection
when used in a ControlNet system.)
Setting the Input Filter Time
To set the input filter time, set the associated bits in the output image
(complementary word) for the module.
Configuring Your 1794-OB16D Output Module
Configure your output module by setting bits in the configuration
word (word 3). This module is compatibility with the Remote I/O
network (with 1794-ASB series D or later), DeviceNet network, and
the ControlNet network. (Note: You can use the Module Connection
or Rack Connection when used in a ControlNet system.)
Specifications
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
Read 1
I
15
I
14
I
13
I
12
I
11
I
10
I
9
I
8
I
7
I
6
I
5
I
4
I
3
I
2
I
1
I
0
Read 2
Read Diagnostics Status
Write 3
Not used
Input Filter FT
0-15
Not used
Where I = Input
FT = Input filter time
Diagnostic status;
Bit 00 = module error;
Bit 01 = external power reverse polarity error;
Bit 02 = sensor power short error;
Bit 03 = sensor power open wire error
3-Wire
Sensor
External
Power
Supply
1794-IB16D
3-Wire
Sensor
2-Wire
Sensor
External
Power
Supply
1794-IB16D
2-Wire
Sensor
3-Wire
Sensor
External
Power
Supply
1794-IB16D
Dummy
Resistor
External
Power
Supply
1794-IB16D
Shunt
Resistor
Shunt
Resistor
Sensor-power lines -
Detect open wire
Detect short circuit
Sensor-power lines -
Detect open wire
3-Wire
Sensor
External
Power
Supply
1794-IB16D
3-Wire
Sensor
2-Wire
Sensor
External
Power
Supply
1794-IB16D
2-Wire
Sensor
3-Wire
Sensor
External
Power
Supply
1794-IB16D
Dummy
Resistor
External
Power
Supply
1794-IB16D
Shunt
Resistor
Shunt
Resistor
Sensor-power lines -
Detect open wire
Detect short circuit
Sensor-power lines -
Detect open wire
Unused input port -
Dummy resistor needed or
Fault LED remains lighted.
20k
Ω
,
≥
1/8W
20k
Ω
,
≥
1/8W
+
_
+
_
+
_
+
_
20k
Ω
,
≥
1/8W
Load
External
Power
Supply
1794-OB16D
Dummy
Resistor
Unused input port -
Dummy resistor needed or
Fault LED remains lighted.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1794-IB16D
FT = 0-15
FLL
I:000
00
Fill File
Source
Destination
Length
#O:010
1
Write FT to complement
of input module.
Write filter time on system startup.
O:010
Dec.
12
11
10
9
8
7
6
5
1
= 5 Octal or 5 Decimal
0
1
1794-IB16D
Bits
Description
Filter Time
10
09
08
Filter time for inputs 0 thru 15
Off to On/
On to Off
0
0
0
Filter time 0 (default)
0.25ms
0
0
1
Filter time 1
0.5ms
0
1
0
Filter time 2
1ms
0
1
1
Filter time 3
2ms
1
0
0
Filter time 4
4ms
1
0
1
Filter time 5
8ms
1
1
0
Filter time 6
16ms
1
1
1
Filter time 7
32ms
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
Read 1
Not used
Read Diagnostics Status
Write 2
O
15
O
14
O
13
O
12
O
11
O
10
O
9
O
8
O
7
O
6
O
5
O
4
O
3
0
2
O
1
O
0
Where O = Output
Diagnostic status;
Bit 00 = module error;
Bit 01 = external power reverse polarity error;
Bit 02 = output short error;
Bit 03 = output open wire error
Specifications - 16 Input Module w/Diagnostics, 1794-IB16D
Meets IEC 3 24V dc input specifications
Number of Inputs
16 (1 group of 16), group isolation
Module Location
Cat. No. 1794-TB32, -TB32S
On-state Voltage
10V dc minimum
24V dcnominal
31.2V dc maximum
On-state Current
2.0mA minimum at 10V dc
8.2mA nominal at 24V dc
12.1mA maximum at 31.2V dc (See Derating Curve)
Off-state Voltage
5.0V dc maximum
Off-state Current
1.5mA minimum
Input Impedance
3.1K ohms
Indicators (field side
indication, customer device
driven)
16 yellow ON/OFF status indicators (field side)
16 red diagnostic status indicators (each channel, field side)
1 red module fault indicator (field side)
Input Filter Time
Off to On
On to Off
0.25ms, 0.5ms, 1ms, 2ms, 4ms, 8ms, 16ms, 32ms
0.25ms, 0.5ms, 1ms, 2ms, 4ms, 8ms, 16ms, 32ms
0.25ms default - Selectable using configuration word 3
Isolation Voltage
Tested at 2121V dc for 1s between user and system
No isolation between individual channels
Power Dissipation
8.5W maximum @ 31.2V dc
Thermal Dissipation
Maximum 29 BTU/hr @ 31.2V dc
Sensor
Power Voltage Drop
Power Current
Power Line
Short Detect Circuit
Open Wire Detect
2.2V dc maximum
50mA maximum
1.0A minimum (in 10s)
50
µ
A maximum
Detect Reverse Polarity
Voltage
Minimum 10V: Module must detect if the reverse polarity external
power supply voltage is greater than the value.
Flexbus Current
30mA