The internal terminating resistor of the control panel is switched on in the factory (delivery state).
The internal terminating resistor must only be switched off in agreement with the manufacturer!
In event of malfunction or non-defined behaviour of the controller or control panel, the setting for the terminating resistor must be checked. You can set the internal terminating resistor of the control panel using the rotary switch S2.4 on the control panel board. The DIL switch S2 is mounted behind the stopper A on the rear of the control panel.
DIL switch S2 on the control panel board
Rotate the smartphone by 90 degrees to show the entire table.
DIL switch
Condition
Function
Comments
S2.4
OFF
Internal terminating resistor switched off
ON
Internal terminating resistor switched on
Factory setting
Checking the terminating resistor
NOTICE
Damage to the components from working on live parts.
▶Before opening the housing, disconnect the plug on the connecting cable for the control panel from the controller.
Disconnect the plug on the connecting cable for the control panel from the controller.
Carefully remove stopper A from the rear of the control panel.
Check the setting of the DIL switch S2.4 on the panel board. The DIL switch S2.4 must be set to the ON position.
If necessary, switch DIL switch S2.4 to position ON.
Re-insert stopper A.
Connect the plug on the connecting cable for the control panel into socket X100 of controller.
