Data Highway 485/DF1 emulation

When you run RSLogix Emulate software, you can place your computer on a simulated DH485 (for SLC 500 emulation) or DF1 (for PLC-5 emulation) network, connecting it with a computer running operator interface software such as RSView. With this setup, you can test your operator interface before connecting it to a physical processor. (If you want to simulate using Channel 0 with ASCII devices, see the Channel 0 emulation topic.)

To use Data Highway 485/DF1 emulation:

1. Set the station number for your project to 1. To do this, click Settings > Emulation, then set the Station # field to 1. (The DF1 or DH 485 emulation will not work unless the station number is set to 1.)
2. Connect a serial cable (a straight-through cable) to connect one of your computer's serial ports (COM ports) to a COM port on the computer running the operator interface software.
3. In RSLogix Emulate, click Settings > Channel 0 Data Highway. The software displays a dialog allowing you to set up a COM port to simulate communications.
4. From the Port listbox, select the COM port you want to use. (Make sure the COM port you choose is not occupied by another device, such as a mouse.)
5. From the Baud listbox, select the communication speed for your connection. You should select the same speed as the connection between the operator interface computer and the physical processor.
6. From the Parity listbox, select the parity for the connection. You should use the same parity as the connection between the operator interface computer and the physical processor.