Allen-Bradley 1794ASB Series B User Manual

3–6 Communicating with FLEX I/O Modules
Publication 17946.5.3 - May 1996
16point Discrete Output Module Image Table Mapping -
1794OB16
Module Image
Outputs
Input Image
Output Image
Word n
Word n
Remote I/O Image
Example
Address
I:011
O:011
Not used
Memory Map of 16-Point Discrete Output Module Image Table –
1794-OB16
Decimal Bits 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
(Octal Bits) 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Input word
Not used
Output word O15 O14 O13 O12 O11 O10 O9 O8 O7 O6 O5 O4 O3 O2 O1 O0
Where O = Output value
8point Discrete Input Module Image Table Mapping - 1794IB8S
Module Image
Inputs
Delay
Time
Status
Input Image
Output Image
Word n
Word n
Remote I/O Image
Example
Address
I:012
O:012
Not used
Memory Map of 8-Point Discrete Input Module Image Table
(with Status) – 1794-IB8S
Decimal Bits 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
(Octal Bits) 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Input word D7 D6 D5 D4 D3 D2 D1 D0 S7 S6 S5 S4 S3 S2 S1 S0
Output word Not used
DT 12-15
(14-17)
DT 00-1 1
(00-13)
Where S = Status of input
D = Input Data
DT = Input Delay T
ime
Smart Sensor (such as AllenBradley Series 9000 Heartbeat Sensors)
Bits
08-15
(10-17)
D = Diagnostic data -
1 = Fault present (Smart)
0 = Normal (no errors)
Bits
00-07
(00-07)
S = Input data
1 = Sensor on
0 = Sensor of
f
Standard Sensor
Bits
08-15
(10-17)
D = Diagnostic data -
1 = Diagnostics not disabled
0 = Normal (Disabled)
Bits
00-07
(00-07)
S = Input data
1 = Sensor on
0 = Sensor of
f

Allen-Bradley 1794ASB Series B Specifications

General

Brand	Allen-Bradley
Model	1794ASB Series B
Category	Adapter
Language	English