Modbus Settings

Setting

Value

Notes

 

Modbus RTU Slave1

Set the Modbus type of the

 

2

Attached Serial Device type

Modbus ASCII Slave

serial device attached to

Modbus RTU Master3

 

NPort 6110’s serial port.

 

Modbus ASCII Master4

 

 

 

NPort Modbus Gateway

 

100 to 3276 ms;

provides this setting for

Initial delay time

those PLCs that need a

default = 100 ms

 

longer time for their

 

 

 

 

system to be initialized.

Modbus/TCP Slave device setting

 

 

IP address assigned to

Valid when the attached

Remote Modbus Slave IP

the remote Modbus

serial device is a Modbus

 

slave device.

RTU/ASCII Master.

 

default = 502

Set this value to 0 (zero) to

TCP Port No.

disable the corresponding

 

 

Modbus/TCP slave device.

 

1 to 247

The unique Modbus ID

ID No. Range

number assigned to the

 

 

Modbus device.5

Additional Information

1.When the serial Modbus device is running in Modbus/RTU Slave mode, the NPort Modbus Gateway is ready to connect automatically to Modbus/TCP Master devices. Up to 7 Modbus/TCP master devices can connect to one serial Modbus slave device.

2.Modbus ASCII Slave mode works the same as Modbus/RTU slave mode, except that the data format is Modbus/ASCII.

3.When the serial Modbus device is running in Modbus/RTU Master mode, the NPort Modbus Gateway is ready to connect automatically to Modbus/TCP slave devices. You will also need to configure the IP address for up to 4 Modbus/TCP slave devices that can be connected to over the Ethernet network.

4-8

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Moxa Technologies NPort 6110 user manual