92
Modbus (RTU Mode)
Section 10-2
10-2-1 Connection Method Examples
Connection Diagram
Note
Using PLCs from Other Manufacturers
Always confirm operation on the actual PLC that you intend to use. PLCs for
which operation has been verified: DL05 from Koyo Electronics Industries.
Connection diagram
PT
NV3W, NV4W,
or NV3Q for
RS-232C
NV4W or NV3Q
for RS-485
Pin No.
Signal
1
CD
RD
ER
PLC (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
NC
NC
SG
7
8
To power
supply
-
PT (Modbus-RTU Master)
+
−
PLC
PT
+24V
0
+SD
−
SD
FG
+RD
−
RD
E
Signal
Signal
(Modbus-RTU Slave)
(Modbus-RTU Master)
To power
supply
Set this node as the
terminating node.
Connect.
1
2
3
4
5
6
7
8
Pin No.
1:1 Connections
+
−
+
−
PLC
Terminating node
PLC
Normal node
Signal
Signal
PT
1
2
3
4
5
6
7
8
Pin No.
+24V
0
+SD
−
SD
FG
+RD
−
RD
E
Signal
(Modbus-RTU Master)
To power
supply
Set this node as the
terminating node.
Connect.
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 ...