Rockwell-automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User M Manual de usuario Pagina 87
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Chapter
3
6%.,&$5,10 <" 17(/%(3
Connect the Adapter to the
PROFIBUS DP Network
This chapter describes:
• the DP physical layer
• using line types A and B
• equipment you need
• how to connect the adapter to the network
• how to terminate the network
The PROFIBUS network media is a balanced transmission line
corresponding to the standard EIA RS-485, terminated at both ends.
Both line A and line B types are available, depending on your system
requirements.
Specifications and guidelines for DP media:
• linear bus, terminated at both ends
• drop cables (preferably no longer than .30m), no branches
• shielded twisted pair
• max. line length between 100 and 1200m (depending on baudrate
and cable type)
• number of stations: 32
• DP baudrates: 9.6, 19.2, 93.75, 187.5, 500 Kbit/s and 1.5M bit/s
Use the following table to determine what line type will best meet
your needs.
Bus Segments and Drop Cables
Characteristic
Line A Requirements Line B Requirements
Total Capacity of
all Drop Cables
/2('$0&(
; ) -;
$2$&,5:
2/ 2/
(4,45$0&(
-/
#,3( $6*(
// //
10'6&513 3($
//
//
$9,/6/ (0*5+
-
/
/
0
$9,/6/ (0*5+
8,5+ $ $6' $5(
- /
/
0
8,5+ $ $6' $5(
%,544 1)
- /
/
0
%,544 1)
- /
/
0
/
0
15 22.,&$%.(
) 64,0* $ &1/%,0$5,10 1) %15+ .,0( 5:2(4 ',7,'( 5+( .(0*5+4 4+180 %: 581
!+,4 ,4 5+( 46/ 1) $.. %64 4(*/(05 $0' '312 &$%.( .(0*5+4
What this Chapter Contains
The DP Physical Layer
- 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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