3
Publication 1794-IN129B-EN-P - April 2009
7. 1794-TB2, -TB3, and -TB3S -
Connect wiring shields to functional
earth ground as near as possible to the module.
1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T and 1794-TB3TS Terminal Base
Wiring
1794-TBN Terminal Base Wiring
Input Map (1794-IF4IXT)
Input Map (1794-OF4IXT, 1794-IF2XOF2XT)
Output Map (1794-IF4IXT)
Output Map (1794-OF4IXT)
-V DC
Common
1794-TB2, -TB3, -TB3S - Terminals B-16 through B-33 are internally
connected in the terminal base unit.
1794-TBN - Terminals B-16 and B-33 are internally connected in the
terminal base unit.
1794-TB3T, -TB3TS - Terminals 16, 17, 19, 21, 23, 25, 27, 29, 31 and 33 are
internally connected in the terminal base unit.
+V DC
Power
1794-TB3, -TB3S - Terminals 34 through 51 are internally connected in the
terminal base unit.
1794-TB3T, -TB3TS - Terminals 34, 35, 50 and 51 are internally connected
in the terminal base unit.
1794-TBN, -TB2 - Terminals 34 and 51 are internally connected in the
terminal base unit.
Chassis
Ground
(Shield)
1794-TB3T, -TB3TS - Terminals 39 through 46 are internally connected to
chassis ground.
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
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
1794-OF4IXT
Word 0
Read Back Channel 0
Word 1
Read Back Channel 1
Channel
Signal
Type
Label
Markings
1794-TB2, -TB3, -TB3S, -TB3T,
-TB3TS
1794-TBN
Terminal
Shield (1794-TB3T,
-TB3TS
Terminal
+
DC only
Current only
+
+
DC only
I
+
A
B
C
+
+
AC or DC
4-Wire Output
Device
+
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15
0
Current
Output
Device
Current
Output
Device
Current
Output
Device
Voltage
Output
Device
I
I
3-Wire Output
Device
2-Wire Output
Device
3-Wire Output
Device
I
_
_
_
_
_
16-33
34-51
0-15
I
R
V
R I
R
V
R
I
R
V
R
I
R
V R
0
1
2
3
4
5
6
7
8
9
10
11
12
16
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
17
18
19
20
21
22
23
24
25
26
27
28
29
30
33
32
31
13
15
14
16
0
2
4
6
8
10
12
14
33
34
1
3
5
7
9
11
13
15
51
16, 0, 2, 4, 6,
8, 10, 12, 14, 33
34, 1, 3, 5, 7,
9, 11, 13, 15, 51
16
Even Numbered Terminals 0 thru 14
34
Row B
Row C
I
I
+
-
+
-
AC or DC
4-Wire Current
Transmitter
Current
Input
+
DC only
+
+
Current
Input
2-Wire Current
Transmitter
Current only
+
+
Current
Input
+
+
3-Wire
Transmitter
DC only
Voltage
Input
I
I
51
33
1794-TBN shown
3-Wire
Transmitter
Word 2
Read Back Channel 2
Word 3
Read Back Channel 3
Word 4
PU
FP
CF
0
Reserved
0
0
0
0
0
BD
DN
0
Word 5
0
0
0
0
P3
P2
P1
P0
0
0
0
0
W3
W2
W1
W0
1794-IF2XOF2XT
Word 0
Analog value for Input channel 0
Word 1
Analog value for Input channel 1
Word 2
Read Back Output channel 0
Word 3
Read Back Output channel 1
Word 4
0
Real Time Sample
Word 5
PU
FP
CF
0
Reserved
0
0
0
0
0
BD
DN
0
Word 6
0
0
0
0
P1
P0
0
0
0
0
V1
V0
W1
W0
U1
U0
Where :
PU = Power up inconfigured
FP = Field power off
CF = In configuration mode
BD = Bad calibration
DN = Calibration accepted
P0 thru P3 = Output holding in response to Q0 thru Q3
W0 thru W3 = Wire off current loop status for channels 0 thru 3 respectively
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
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
1794-OF4IXT
Word 0
EN
S1
S0
0
0
0
0
0
0
0
0
0
0
0
0
0
Word 1
Output Data Channel 0
Word 2
Output Data Channel 1
Word 3
Output Data Channel 2
Word 4
Output Data Channel 3
Word 5
Ch 3 Configuration
Ch 2 Configuration
Ch 1 Configuration
Ch 0 Configuration
Word 6
IC
1
TR
IT
Q3
Q2
Q1
Q0
RV
QK
CK
GO
Channel Number
1794-IF2XOF2XT
Word 0
EN
S1
S0
0
0
0
0
0
0
0
0
0
0
0
0
0
Word 1
Analog Output Data - Channel 0
Word 2
Analog Output Data - Channel 1
Word 3
0
0
0
0
0
0
0
0
Input Channel 1 Filter
Input Channel 0 Filter
Words 4
Output Channel 1
Configuration
Output Channel 0
Configuration
Input Channel 1
Configuration
Input Channel 0
Configuration
Word 5
0
Real Time Sample Programmed Interval
Word 6
IC
1
TR
IT
Q1
Q0
0
0
RV
QK
CK
GO
Channel Number
Where :
EN = Inable output - 0 = output follows S1/S0; 1 = output enabled
S1/S0 = Safe state source
IC = Initiate Configuration bit
TR = Transparent bit
IT = Interrupt toggle bit
Q0 thru Q3 = Requests for outputs to hold
RV = Revert to default bit
QK = Quick calibration
CK = Calibration clock
GO = Gain Offset select
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
