AH500 Module Manual 
11-12 
Tighten the screw of the communication connector to 
fix the cable to the holes of the connector with a 
standard slotted screwdriver. 
 
11.3.4  Installing the DeviceNet Connector 
  After wiring is over, insert the DeviceNet connector to the interface. 
  Tighten the screws of the two sides of the DeviceNet terminals. 
 
Note:   
  The cable should be away from the power wire to decrease the electromagnetic interference. 
  The two ends of the shielded wire should be grounded. 
  The 121 ohm resistor should be connected between the white and blue signal wires. 
11.3.5  DeviceNet Bus Transmission Distance and Network 
Topology Structure 
DeviceNet bus transmission distance is determined by the DeviceNet bus transmission speed.   
See the following table on different transmission speed and the corresponding maximum 
communication distance. 
speed (bit/second) 
10K  20K  50K  125K  250K  500K  800K  1M 
communication 
distance 
5000  2500  1000  500  250  100  50  25