
APPENDIX 3 ________________________________________________________________________
108 ____________________________________________________________________ U263EN-1.4
Installation
Switch the transmitter off.
Resistors R2, R3 and R4 between connectors X4 and X5 in the
component board in the cover of the transmitter are removed with
side-cutting pliers. The module is plugged in connectors X4 and X5
on the main board of the DMP248 transmitter; connector X1 on the
module board to connector X4 and connector X2 to connector X5.
X1
X2
+
-
C
h1 Ch2
--++
R2
R3
R4
X6
R
X HI
R
X
LO
TX LO
TX
HI
X4
X5
RX
TX
X1X2
HIHI
LO
LO
X1
X2
R3
R6
Jumper ( ) selections for the
RS 485/422 serial bus module
Single pair
Dual pair
serial bus
module
Cut off the resistors R2, R3 and R4 on the main board.
New signal names for X6 screw terminal are on the module.
Follow the instructions on the module:
X1 to X4 and
X2 to X5 on the mother board
NOTE! If the transmitter is NOT at the end
of the bus OR the line has a dynamic line
termination, the resistors R3 and R6 have
to be removed!
RX GND TX
24V
RS 485/422
Connect the data wires to screw terminal X6 on the main board.
Switch the power on.
Operation
The DMP248 transmitters can either be given an address or operated
without an address. Both single and dual loop wiring with half duplex
Komentarze do niniejszej Instrukcji