Product specifications
Section 2 Installation Installing the INSUM Interface, CI857/TP853
3BSE036351-510 A 121
Installing the INSUM Interface, CI857/TP853
The CI857 is powered from the processor unit via the CEX-Bus and requires 
therefore no additional external power source.
Use the following procedure to install the CI857/TP853:
1. Mount the unit onto the DIN-rail, see Mounting AC 800M Units onto DIN-Rail 
on page 65 and Installing the PM86x/TP830 Processor Unit in Single 
Configuration on page 78.
2. Connect the Ethernet twisted pair cable to the COM1 connector on the 
baseplate (COM2 is not used for connection to INSUM).
3. Connect the other end of the Ethernet cable to the INSUM equipment via 
Ethernet/LON Gateway.
Ethernet Twisted Pair Connection
The Ethernet twisted pair is connected via the 10BaseT RJ45 connector located on 
TP853. For a description of the connector see Table 5 on page 84.
Note that there is no unit redundancy for the CI857 unit. 










