e
Nod3-
C
Digital Transmitter
e
Nod3-
C
:
User’s instructions
NU-eNod3C-E-0911_165702-I
9/22
2.4 COMMUNICATION
INTERFACES:
e
Nod3-
C
is capable of communicating with an automatic control for each connection:
The connection to the
RS 485 / RS 422
interface is made through TA, TB and RA, RB connections on the 9-
pins connector. (TA = direct transmission, TB = inverse transmission, RA = direct reception, RB = inverse
reception).
For an
RS485
(half duplex) communication, just connect the TB and TA pins and remove the corresponding
jumper (OFF).
For an
RS422
or
RS485
full-duplex communication, use the four TB, TA, RB and RA pins. The corresponding
jumper must be in place (ON) (which is the default case on delivery).
The RS232 interface is connected using Tx, Rx and REF connections on the 9-pin connector.
The
CAN
interface is connected using the CANH, CANL and REF (not mandatory) connections on the 9-pin
connector.
3 COMMUNICATION:
jumper CAN/RS ON
-
RS485/422
-
RS232
-
CAN
jumper CAN/RS OFF
+
-
55 V
DC
max
OUT
COM
OUT
Load
+
-
55 V
DC
max
OUT
COM
OUT
Load
OUT
COM
OUT
Load
38 V
AC
max
RS485 jumper
ON : Full duplex
OFF : Half duplex
CAN / RS jumper
ON : RS
OFF : CAN
TB
TA
RB
RA
Rx
TX
REF
CANL
CANH
R
S
2
32
CAN
R
S
4
85
Half/Full
c
o
mmunic
a
tion
9
7
6
5
4
3
2
1
8
