SST-PFB-SLC User’s Guide
22
4.2
Wiring
4.2.1 ProfiBus Wiring
The module contains a standard DB9 connector which can be connected to a
Profibus bus terminal. The module has no termination but the bus terminal
has built-in switchable termination.
Selecting the proper line type
Use this table to determine which line type best suits your system
requirements.
Pin #
Pin Description
DB9 Termination when using
SST-PFB-SLC
1
chassis ground
2
reserved
3
data +
connect this pin to pin 8 (data -) with 220
ohm resistor
4
TX Enable
5
Isolated ground
connect this pin to pin 8 (data -) with 390
ohm resistor
6
Is5V
connect this pin to pin 3 (data +) with 390
ohm resistor
7
reserved
8
data -
9
reserved
Baud Rate
(bits/s)
Line A Distance
(Max)
Line B Distance
(Max)
Total Capacitance
of all Drop Cables
v19.2k
1200 m**
1200 m**
*15nF
93.75k
1200 m**
1200 m**
*3nF
187.5k
1000 m**
600 m**
*1nF
500k
400 m**
200 m**
*0.6nF
1.5M
200 m**
NA
*0.2nF
3, 6 and 12M 100 m**
NA
*0.05nF
NA = Not Applicable
*If using a combination of both line types, divide the lengths shown by two.
**This is the sum of all bus segment and drop cable lengths.
Summary of Contents for SST-PFB-SLC
Page 7: ...Contents vii Technical Data 105 Index 107 A...
Page 8: ...SST PFB SLC User s Guide viii...
Page 14: ...SST PFB SLC User s Guide 6...
Page 20: ...SST PFB SLC User s Guide 12...
Page 34: ...SST PFB SLC User s Guide 26...
Page 53: ...45 6 DP Master Application Examples...
Page 56: ...SST PFB SLC User s Guide 48 Sample Program...
Page 57: ...DP Master Application Examples 49 Sample continued...
Page 66: ...Using the Scanner Module as a DP Slave 58...
Page 67: ...59 8 Using FDL...
Page 75: ...Using FDL 67 Sample Program...
Page 76: ...SST PFB SLC User s Guide 68 Sample Continued...
Page 80: ...SST PFB SLC User s Guide 72 Sample Program...
Page 81: ...SST PFB SLC User s Guide 73 Sample Continued...
Page 85: ...SST PFB SLC User s Guide 77...
Page 86: ...SST PFB SLC User s Guide 78...
Page 87: ...79 9 Diagnostics This chapter describes system diagnostics...
Page 105: ...97 11 Network Parameter Defaults This chapter describes network defaults...