Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 31)

Installation
Chapter 3
3-7
Selecting the Network Link
You use Switch Assembly SW-7, a spare assembly in all Series A
modules, to select whether the KF2 treats the network link as a Data
Highway or as a PCL.
The following table shows the settings for Switch Assembly SW-7:
For This Network: Set Switch 1: Set Switch 2:
Data Highway OFF OFF
Peer Communication Link ON OFF
Selection of RS-232-C/RS-422-A
Switch Assembly SW-8 lets you select whether the asynchronous
interface uses RS-232-C or RS-422-A standard communication.
For Communication Using Standard: Set Switch 1: Set Switch 2:
RS-232-C OFF ON
RS-422-A ON OFF
Important: This is the only option switch that affects KF2 operation
after power-up. It changes the voltage applied to the network link
connector pins to those required for the standard selected. Set this switch
BEFORE power-up.
Replacing a 1771-KD Module with a KF2 Module
By setting the switches properly on the KF2 module, you can use it to
replace an older 1771-KD module in an existing application without
having to make any changes in your application programs.
In Set
Switch Ass’y
Switch
No. Setting
SW-1 1 OFF
2 Same Setting as 1771-KD Switch (Assembly SW-1, Switch 1)
3 OFF
4 OFF
5 OFF
SW-2 1, 2 Same Setting as 1771-KD Switches (Assembly SW-2, Switches 1 and 2)
SW-3 1, 2, 3 Same Setting as 1771-KD Switches (Assembly SW-3, Switches 1, 2, and 3)
SW-4 1, 2, 3 Same Setting as 1771-KD Switches (Assembly SW-4, Switches 1, 2, and 3)
SW-5 1, 2 Same Setting as 1771-KD Switches (Assembly SW-5, Switches 1 and 2)
SW-6 1, 2, 3 Same Setting as 1771-KD Switches (Assembly SW-6, Switches 1, 2, and 3)
4 Same Setting as 1771-KD Switch (Assembly SW-1, Switch 5)
SW-7 1, 2 OFF
SW-8 1 OFF
2 ON