Serial Communication; Ethernet Communication - Kohler MPAC 1500 Manual

6.3.1

Serial Communication

Set the following communication parameters for serial
communication. Also see Figure 6-7.
Baud Rate. Required for serial connections. The baud
rate must match the baud rate of the connected PC.
Modbus Server. Enable the serial port for Modbus
communication.
Modbus Addr. Assign a unique address between 001
and 247 to the serial port.
6.3.2

Ethernet Communication

Work with your local network administrator to set the
following communication parameters for ethernet
communication. Also see Figure 6-7.
Modbus Server TCP. Enable TCP if the transfer switch
is connected to a network for TCP/IP communication
(for example, ethernet communication).
Setting Range
Modbus Server TCP Enabled or
Disabled
Modbus Server Enabled or
Disabled
Modbus Addr 001-247
default 1
Baud Rate 9600, 19200,
57600
Modbus TCP Unit ID —
IP Address —
Subnet Mask —
MAC Address Factory-set
Figure 6-7 Communication Parameters
98 Section 6 Communications
Needed for Connection Type:
Remote
Serial
Serial (modem) Ethernet
X X
X X
X X
— —
— —
— —
— —
Modbus Address. Assign a unique Modbus address to
each device on the network.
requires a unique Modbus address to identify the
controller. Record the address to enter into Monitor III
software.
Modbus TCP Unit ID. A unit ID is required for Modbus
over TCP communication.
communication is analogous to the Modbus address for
serial communication through the RS-485 ports.
IP Address and Subnet Mask. The transfer switch
may have a default IP address assigned at the factory.
Change the IP address to an address owned by the
user. Obtain an IP address and subnet mask
information from the local network administrator.
MAC address. The MAC hardware address is
factory-set. It can be seen in the View>Communications
Setup screens but not viewed or changed in the setup
menus.
Notes
X Enable for network communication through the ethernet
port.
Enable for Modbus communication through the serial port
on the main logic board. See Section 6.2.
Address for the RS-485 serial port (on the logic board).
Baud rate in bits per second for serial communication
between the controller and a personal computer's COM
port.
X Factory-set to 3. A unit ID is required for Modbus over
TCP communication. The unit ID for TCP communication
is analogous to the Modbus address for serial
communication through the RS-485 ports.
X Obtain from your local network administrator. Every device
on the network must have a unique IP address.
X Obtain from your local network administrator.
X Hardware address, entered at the factory. Not adjustable.
Appears only in the Communications View screen.
Monitor III software
The unit ID for TCP
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