ERS II (IES Module)
IES and Data Highway Switch Settings

In ERS II subsystems, the IES is a stand alone module (figure 1) that is installed in a slot of the backplane. The IES address is configured with two rotary switches on the module. Access to these switches can be gained from the end bracket of the module from the rear of the ERS II.

The switch labeled MS selects the Most Significant (or high order) hexadecimal digit of the IES address. The LS switch selects the Least Significant (or low order) hexadecimal digit of the IES address. Refer to the table below for switch settings.

Terminating IES Module

• If this IES is not the last module in the daisy chain, verify that switch 2 of the two-position DIP switch on the end bracket is OFF (the switch is OFF when it is pointing up).
  
• If this IES is the first or last module in the daisy chain, set switch 2 of the two-position DIP switch on the end bracket to the ON position (pointing down). Switch 1 of this DIP switch must always be in the down position.
• Connect the other RJ-11 connector to the next IES module.

Connecting the Data Highway Cable

• After setting the IES address, and setting the termination switch, connect the data highway cable to one of the RJ-11 connectors on the rear bracket of the IES module (it does not matter which one).

Show me how to connect the data highway cable

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