4�10�- Communications; 4�10�1� Connections - Circutor CVM-C10 Instruction Manual

4�10�- COMMUNICATIONS
The CVM-C10 devices have one RS-485 communications port.
The device has as standard two communications protocols: MODBUS RTU ® and BACnet.
The protocol and configuration parameters are selected in the setup menu. (
cations: Protocol"
Note: BACnet protocol available in devices with version 3.00 or higher.
4�10�1� CONNECTIONS
The RS -485 cable must be wired with twisted pair cable with mesh shield (minimum 3 wires), with a
maximum distance between the CVM-C10 and the master device of
A maximum of 32 CVM-C10 devices can be connected to this bus.
Use an intelligent RS-232 to RS-485 network protocol converter to establish the communications with
the master device.
72
)
RS-232
USB
Ethernet
Profibus
...
OUTPUTS
S0- S0+ S0+
RS485 INPUTS
A(+) B(-) I1 I2
POWER SUPPLY
Rc R2 R1 Tc T2 T1
GND
Ph-Ph Ph-N
300V ~
520V ~
P1 P2 P1 P2 P1
L1 L2 L3
V V V N
L1 L2 L3
S1 S2 S1 S2 S1 S2
Figure 34: RS-485 Connection diagram�
PC
RS-232 / USB / Ethernet / Profibus ...
RS-485
RS-485
A ( + )
B ( - )
S
POWER SUPPLY
Rc R2 R1
Ph-Ph
520V ~
P2
V V
L1 L2
"4.9.29. RS-485 communi-
1200 metres.
OUTPUTS
S0- S0+ S0+
RS485 INPUTS
A(+) B(-) I1 I2
Tc T2 T1
GND
Ph-N
300V ~
P1 P2 P1 P2 P1 P2
L1 L2 L3
V N
L3
S1 S2 S1 S2 S1 S2
Instruction Manual
CVM-C10