Manual 37353A
MFR 13 Packages - Protection Relay
Page 18/91
© Woodward
Interface (
Packages GPX-I
/
GPY-I
/
GPY-I-N
/
K08
)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Modbus Interface
X1 X2 X3 X4 X5
GND
B
(i
nver
te
d)
A
(n
on
-inv
er
ted
)
B
(i
nver
te
d)
A
(n
on
-inv
er
ted
)
In
te
rfa
ce
R
S
-485
M
odbus R
TU
S
lav
e
Figure 3-11: Interfaces
Terminal Description
(X1) (X2) (X3) (X4) (X5)
B A
GND
B A
RS-485, Modbus RTU Slave
NOTE
The Modbus interface connection may be performed at the terminals X1 through X3 or X3 through X5.
The terminals X1 and X4 as well as X2 and X5 are connected internally.
