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Manual
Manual 37223E
37223E
easYgen-3000
easYgen-3000 Series
Series (Package
(Package P1)
P1) -
- Genset
Genset Control
Control
©
© Woodward
Woodward
Page
Page 55/67
55/67
Interfaces
Interfaces
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≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
RS-485 Serial Interfaces
RS-485 Serial Interfaces
RS-485 Serial Interface #1 (Serial Interface #2, Interface #2)
RS-485 Serial Interface #1 (Serial Interface #2, Interface #2)
Figure 6-49: RS-485 interface #1
Figure 6-49: RS-485 interface #1 - overview
- overview
Terminal
Terminal
Description
Description
A
A
max
max
1
1
not
not connected
connected
N/A
N/A
2
2
B
B (TxD+)
(TxD+)
N/A
N/A
3
3
not
not connected
connected
N/A
N/A
4
4
B'
B' (RxD+)
(RxD+)
N/A
N/A
5
5
not
not connected
connected
N/A
N/A
6
6
not
not connected
connected
N/A
N/A
7
7
A
A (TxD-)
(TxD-)
N/A
N/A
8
8
not
not connected
connected
N/A
N/A
9
9
A'
A' (RxD-)
(RxD-)
N/A
N/A
Table 6-32: RS-485 interface #1 - pin assignment
Table 6-32: RS-485 interface #1 - pin assignment
Half-Duplex with Modbus on RS-485
Half-Duplex with Modbus on RS-485
9
9 4
4
120
120
Ω
Ω
120
120
Ω
Ω
e
ea
as
sY
Yg
ge
en
n ((S
Slla
av
ve
e 1
1))
e
ea
as
sY
Yg
ge
en
n ((S
Slla
av
ve
e n
n))
9
9 4
4
A
A ((T
Tx
xD
D--))
B (TxD+)
B (TxD+)
Master
Master
Figure 6-50: RS-485 Modbus - connection for half-duplex operation
Figure 6-50: RS-485 Modbus - connection for half-duplex operation
Full-Duplex with Modbus on RS-485
Full-Duplex with Modbus on RS-485
120
120
Ω
Ω
120
120
Ω
Ω
120
120
Ω
Ω
120
120
Ω
Ω
T
Tx
x
R
Rx
x
R
Rx
x
T
Tx
x
7
7 2
2
9
9 4
4
7
7 2
2
9
9 4
4
easYgen (Slave n)
easYgen (Slave n)
easYgen (Slave 1)
easYgen (Slave 1)
A
A' ' ((R
Rx
xD
D--))
B' (RxD+)
B' (RxD+)
A
A ((T
Tx
xD
D--))
B (TxD+)
B (TxD+)
T
Tx
x
R
Rx
x
Master
Master
Figure 6-51: RS-485 Modbus - connection for full-duplex operation
Figure 6-51: RS-485 Modbus - connection for full-duplex operation
NOTE
NOTE
Please note that the easYgen must
Please note that the easYgen must be configured for half- or full-duplex configuration (refer to parame-
be configured for half- or full-duplex configuration (refer to parame-
ter 3173 in the
ter 3173 in the Configuration Manual 37224).
Configuration Manual 37224).