Network Configuration

• Max. Cable Length

  Check that the cables used on the network meet the following specifications.

  Baud Rates	Max. Cable Length
  12 Mbps	100 m
  6 Mbps	100 m
  3 Mbps	100 m
  1500 kbps	200 m
  500 kbps	400 m
  187.5 kbps	1000 m
  93.75 kbps	1200 m
  19.2 kbps	1200 m
  9.6 kbps	1200 m

• Terminating Resistor

  Ensure that two terminating resistors are connected to both ends of the network.

  The terminating resistor should be connected as shown below.

  

  Symbol	Description
  a	Data line A
  b	Data line B

• Cable

  The cables should meet the PROFIBUS specifications.

  Item	Property
  Impedance	135 to 165 Ω
  Capacity	< 30 pf/m
  Loop resistance	110 Ω/km
  Wire diameter	0.64 mm
  Core cross-section	> 0.34 mm2