Gateway 312785C important safety instructions Wire the DeviceNet Network, Main Task Tree

Appendix A: DeviceNet™ Slave Communication

Configure the DeviceNet Scanner to be address 0. Make sure to set up the 32-bit Input and Output memory spaces for a size of 32 (to match the configuration made above in both Gateway and RSNetWorx for DeviceNet).

Select the RSNetWorx tab, and navigate to the RSNet- Worx for DeviceNet configuration that you have previ- ously created. Open the configuration from here and download it to the network.

FIG. 46: Main Task Tree

In the Main Task tree, open the Main Routine Ladder Logic file. Create a rung of ladder to enable the Devi- ceNet network. The required output is always:

Local:YourDNBSlot:0.CommandRegister.Run

Create a few rungs by taking the DeviceNet Input data, Local:2:I.Data[0…3], and adding 1 to them. Store the results in Local:2:O.Data[0…3]. Based on the configura- tion in the Gateway, if values are changed on the Gate- way Write tags, the Read tags will display the respective values, plus one.

Save and download this configuration to the Control- Logix PLC.

Wire the DeviceNet Network

All DeviceNet networks require a termination resistor at the two end nodes on the network. Place a ¼ watt 120 ohm resistor between CAN H (White) and CAN L (Blue) of the DeviceNet connection.

56 312785C