Nexen ROP 964538 - Manual (Page 7)

7 FORM NO. L-21200-C-0613
ELECTRICAL CONNECTIONS
Note: The RSTC must be equipped with the Modbus communications option to be compatible with the ROP.
Note: The communication cable is shielded and the shield’s drain wire is terminated at the ROP. To maintain
the integrity of the ROP and cable’s shielding, the ROP’s mounting studs must connect to earth ground via
a low resistance conductor.
TENSION
+ +
Cable Shield Drain
Wire
TxA- Orange
TxB+ Blue
RxA- Yellow
RxB+ White
DC COM Black
+24 VDC Red
Figure 4
Figure 5
1 2 3 4 5 6
R
ed
B
la
ck
W
hi
te
Ye
llo
w
B
lu
e
O
ra
ng
e
ROP Communications Cable
RSTC1000
RS485