CG Drives & Automation 01-7492-01r1 Communication 75
9. Communication
The AC drive provides possibility for different types of
communication:
• Galvanic isolated Modbus RTU via RS-485 interface on
X1 terminal on control board. See “4. Control Connec-
tions” on page 49.
• Modbus RTU via RS-232 interface behind the control
panel (not galvanic isolated).
• Wireless interfaces provided by the connected control
panel.
• Control panel with WiFi (optional) provides
Modbus/TCP.
• Control panel with BLE (optional) enables
connectivity with mobile application.
• Fieldbuses as Profibus DP, DeviceNET and CANopen.
• Industrial Ethernet as Modbus/TCP, Profinet IO,
EtherCAT, and EtherNet/IP.
For available communication options see “13. Options” on
page 201.
9.1 Modbus RTU
Preferably use the isolated RS-485 interface for serial
communication. This port is galvanically isolated.
The protocol used for data exchange is based on the Modbus
RTU protocol, originally developed by Modicon.
The AC drive acts as a slave with selectable address in a
master-slave configuration. The communication is half-
duplex. It has a standard non return zero (NRZ) format.
The baud rate of the RS-485 interface is adjustable between
2400 to 115200.
The character frame format (always 11 bits) has:
• one start bit
• eight data bits
•two stop bits
•no parity
The AC drive has also an asynchronous serial
communication interface, RS-232, behind the control
panel.
Please note that this port is not galvanically isolated.
It is possible to temporarily connect a personal computer
with for example the software EmoSoftCom (programming
and monitoring software) to the RS-232 connector on the
control panel. This can be useful when copying parameters
between AC drives etc. For permanent connection of a
personal computer you have to use one of the
communication option boards.
Fig. 83 RS-232 connector behind the control panel
9.2 Parameter sets
Communication information for the different parameter
sets.
The different parameter sets in the AC drive have the
following DeviceNet instance numbers, Profibus slot/index
numbers, Profinet IO index and EtherCAT index numbers:
NOTE: This RS-232 port is not isolated.
NOTE: Communication Fault detection can cause the
drive to give a warning or trip when the Control Panel
is removed (see menus [2645] and [2646]), or when
Control Panel port communication is faulty (see
menus [2647] and [2648]).
WARNING!
Correct and safe use of a RS
-232
connection depends on the ground pins of
both ports being the same potential.
Problems can occur when connecting two
ports of e.g. machinery and computers where both
ground pins are not the same potential. This may
cause hazardous ground loops that can destroy the
RS
-232 ports.
The RS
-232 connection behind the control panel is
not galvanically isolated.
Note that the control panel RS
-232 connection can
safely be used in combination with commercial
available isolated USB to RS
-232 converters.
Param.
set
Modbus/
DeviceNet
Instance
number
Profibus
Slot/Index
Profinet IO
index
EtherCAT
and
CANopen
index
(hex)
A
43001–
43899
168/160 to
172/38
19385 -
20283
4bb9 - 4f3b
B
44001–
44899
172/140 to
176/18
20385 -
21283
4fa1 - 5323
C
45001–
45899
176/120 to
179/253
21385 -
22283
5389 - 5706
D
46001–
46899
180/100 to
183/233
22385 -
23283
5771 - 5af3
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