E6 56 DTR.APC.APR.ALW.03(ENG)
Fig.2c. The link of transmitter and communicator or converter to <SIGNAL+> <TEST+>
transmitter terminals in case of the resistance in current loop is smaller than 240Ω.
Fig.2d. The link of transmitter and communicator or converter to <SIGNAL+> <SIGNAL->
transmitter terminals in case of the resistance in current loop is smaller than 240Ω.
If Ro in current loop is lower than 240Ω is necessary to connect 240Ω resistor to current loop by
remove jumper from <SIGNAL-> and <TEST-> terminals.
After communication jumper should came back at its place.