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95
Modbus (RTU Mode | Temperature Controller)
Section 10-3
10-3-1 Connection Method Examples
Connection Diagram
Note
Use RS-485 connections when connecting to OMRON EJ1 Temperature Con-
trollers. Refer to the information on connecting to EJ1 Temperature Control-
lers with RS-422A/485 connections in the
NV-series Setup Manual
(Cat. No.
V103).
Connection diagram
PT
NV4W or NV3Q
for RS-232C
NV4W or NV3Q
for RS-485
Pin No.
Signal
1
CD
RD
ER
Temperature Controller
(Modbus-RTU Slave)
SG
SD
2
3
4
5
6
DR
7
8
9
RS
CS
Pin No.
Signal
1
+
-
SD
RD
FG
2
3
4
5
6
RS
CS
SG
7
8
To power
supply
-
PT (Modbus-RTU Master)
RS-232C Connections
+
−
PT
1
2
3
4
5
6
7
8
Pin No.
+24V
0
+SD
−
SD
FG
+RD
−
RD
E
Signal
Signal
(Modbus-RTU Master)
To power
supply
Connect.
Temperature Controller
(Modbus-RTU Slave)
Connect terminating
resistance of 110 to 125
Ω
to port B on the EDU.
RS-485
1:1 Connections
+
−
+
−
Temperature Controller
Terminating node
Temperature Controller
Normal node
Signal
Signal
PT
+24V
0
+SD
−
SD
FG
+RD
−
RD
E
Signal
(Modbus-RTU Master)
To power
supply
Connect.
Connect terminating
resistance of 110 to
125
Ω
to port B on
the EDU.
1
2
3
4
5
6
7
8
Pin No.
RS-485
1:N Connections
Summary of Contents for NV3Q Series
Page 1: ...Cat No V105 E1 02 Programmable Terminals NV Series NV3W NV4W NV3Q HOST CONNECTION MANUAL ...
Page 2: ......
Page 3: ...NV Series NV3W NV4W NV3Q Programmable Terminals Produced December 2009 ...
Page 4: ...iv ...
Page 6: ...vi ...
Page 16: ...xvi ...
Page 20: ...xx ...
Page 68: ...44 S7 200 Series Section 5 1 ...
Page 69: ...45 SECTION 6 Connecting to LG PLCs 6 1 MASKER K Cnet Series 46 6 1 1 Connection Method 46 ...
Page 72: ...48 MASKER K Cnet Series Section 6 1 ...
Page 76: ...52 FA M3 Series Section 7 1 ...
Page 110: ...86 Web Controller Series Section 9 3 ...
Page 120: ...96 Modbus RTU Mode Temperature Controller Section 10 3 ...
Page 142: ...118 Modbus Connections Section 12 5 ...
Page 144: ...120 Revision History ...