DL bus

The C.M.I. has two DL inputs for simultaneous measurement recording from up to two controllers with DL outputs.
        Controller 1                              C.M.I.                               Controller 2
Any cable with a cross section of 0.75 mm² and a length of up to max. 30 m can be used for the data line (e.g. twin-strand). For longer cables, we recommend the use of shielded cable whereby the cable shielding must be connected with the sensor earth.
If two controllers are recorded with the C.M.I., separately shielded cables must be used as protection against crosstalk. The data link for the DL bus must likewise never be run in one cable with the CAN bus.
¨     With controllers UVR1611K and UVR1611S, output 14 (DL) can be used either as data line or as switch output (with extra auxiliary relay). For data logging via DL bus, output 14 must therefore always be defined as a “Data line” in the “Outputs” menu.
¨     With the controllers UVR1611 of the E-series (“board version“), output 14 is simultaneously used as switch output OUTPUT 14 and data line (DL bus). For activation, the output must be parameterised as a “Switch output”, even if the data link is to be activated. For activation of the data line, the query “UVR1611E:” must additionally be answered with ”yes” (see additional manual for UVR1611 E).
¨     UVR1611 controllers from version A2.16 additionally enable the recording of network input variables, which are handled by the C.M.I. as a virtual second UVR1611. When
parameterising output 14 as a “Data line”, the menu option NETW.EG.=>DL.: must be answered with yes. Recording of network variables is therefore not possible, if two controllers are connected with the C.M.I. (this note applies only to data recording via DL bus).
The scope for data recording of this 2nd virtual UVR1611 in the menu “Settings/Data logging“ of the C.M.I.s must be set like this: