Rockwell-automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User M Manual de usuario Pagina 22
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2–2 How Communication Takes Place and I/O Image Table Mapping
)! ( $# , $*"&
For example, a 16 point discrete input module will have up to 2 read
words and 1 write word.
Module Image
Inputs
Input Size
Output Size
$& $&'
$&$&
I/O Image
Not used
,%$ #( '&( #%)( $)!
!+
"
Not used
!+
"
Check the I/O map for each module for the exact mapping.
The first word of output data received by the adapter is the Adapter
Status Word. Output data is received by the adapter in the order of
the installed I/O modules. The Output data for Slot 1 is received
first, followed by the Output data for Slot 2, and so on up to slot 8.
All bits in the output status word are reserved
The first word of input data sent by the adapter is the Adapter Status
Word. This is followed by the input data from each slot, in the order
of the installed I/O modules. The Input data from Slot 1 is first after
the status word, followed by Input data from Slot 2, and so on up to
slot 8.
%(& (()'
!$( #%)( (
!$( #%)( (
!$( #%)( (
!$( )(%)( (
!$( )(%)( (
!$( )(%)( (
Read Data
Write Data
Network READ
Network WRITE
PROFIBUS Adapter
Slot 1
I/O Module
& (
Slot 2
I/O Module
Slot 8
I/O Module
%(& (()'
Polled I/O Structure
- 1
- ! 1
- #" 1
- Important User Information 2
- 5
- Related Publications 6
- Conventions 7
- About this User ManualP–4 8
- Table of Contents 9
- Table of Contents 10
- Connect the Adapter to the 11
- PROFIBUS DP Network 11
- Configure the Adapter for 11
- Master/SlaveCommunication 11
- Glossary 12
- Troubleshooting 12
- Specifications 12
- Device Data Base File 12
- Hazardous Locations 12
- Overview of FLEX I/O and Your 13
- PROFIBUS Adapter Module 13
- Mount and Remove your 14
- System Easily 14
- Optional Accessories 14
- Mounting Kit (1794ĆNM1) 15
- Mounting Dimensions 16
- Purpose of the 1794ĆAPB 17
- FLEX I/O Adapter 17
- PROFIBUS Adapter 18
- Components 18
- Network Connector 19
- Power Wiring 19
- How Communication Takes 21
- Place and I/O Image Table 21
- Polled I/O Structure 22
- Adapter Input Status Word 23
- Mapping Data into 24
- Module Image 25
- I/O Image 25
- 1794ĆIB8 Memory Map 25
- 1794ĆIB8 Input Filter Times 25
- 1794ĆIB16 Memory Map 26
- 1794ĆIB16 Input Delay Times 26
- 1794ĆOB8 Memory Map 27
- 1794ĆOB16 Memory Map 27
- " ) &(,+ + 28
- &(,+ !#$+ ) #% 28
- 1794ĆOV16 29
- 1794ĆIB8S Memory Map 30
- 1794ĆIB8S Input Delay Times 30
- 32/32 )"--&+ 31
- 1794ĆIA8 Memory Map 32
- 1794ĆIA8 Input Filter Times 32
- 1794ĆOA8 Memory Map 33
- 1794ĆOW8 Memory Map 33
- 1)) . +&$ !(0 34
- 5-- 2#/)' $+4 35
- 1794ĆOE4 Memory Map 37
- 6.. 3#0)' $+5 38
- 1794ĆIE4XOE2 Memory Map 40
- 21),*74( 5(/(&6 %,6 41
- 7// 4$1*( %,6 41
- -#2*$ 1 5.$ 43
- Reserved 47
- 1794ĆIT8 Read and Write Words 47
- for each channel 51
- Input Module 52
- Setting the Input Filter 59
- Output Module 65
- Table Mapping 68
- Word 8 Not Used 69
- Setting the Input Filters 70
- Table 2.A 71
- 1, ,!!2/ 73
- Pulse Counter Module 75
- (1794-IP4) 80
- Defaults 85
- Cabling and Equipment 88
- Required for Line A Type 88
- Required for Line B Type 89
- Terminate the Network 91
- Master/Slave Communication 93
- Entering User Parameter 94
- • auto configure 95
- • STATUS LED flashes red/off 96
- FLEX I/O modules 97
- Entering Check 100
- Configuration Data 100
- Read Configuration 102
- Response Data 102
- 103
- Viewing Status from the 104
- Master's Configuration 104
- Software 104
- 105
- 107
- 109
- Hazardous LocationsC–2 110
- 111
- (8;5.@3./ ;/9;/</7=+=387 124
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