Modbus Master View

Use Modbus Master view to configure settings for Modbus communication as a Master device.
Modbus Master View Example
Modbus Master View Parameters
Parameter
Definition
Available Choices
Modbus Format
Determines whether the Modbus transmission format is Modbus Remote Terminal Unit (RTU) or Modbus ASCII.
  • 0 = RTU (default)
  • 1 = ASCII
Response Timeout
Defines the minimum amount of time that a Modbus client waits for a response from the server before a new transmission can begin.
0…3,600,000 (x1 ms) (default = 200)
Broadcast Pause
Specifies the delay after the data broadcast.
0…3,600,000 (x1 ms) (default = 200)
Inter-frame Timeout
Specifies the maximum delay time to receive data for the RTU.
0 is not a valid value.
Use Table 2 and Table 3 to determine the minimum value.
Retry Count
Specifies the maximum number of times to retry the request.
0…127 (default = 0)
Diagnostics
When the controller status is online, open the Diagnostics dialog to view diagnostic counters for performance and error management with the Modbus Master.
–
Inter-frame Timeout Minimum Values (10 Bit)
Baud Rate
Default Value
Valid Range (µs)
1200
58000
29000…65535000
2400
28000
14000…65535000
4800
14400
7200…65535000
9600
7200
3600…65535000
19200
3500
1750…65535000
38400
3500
1750…65535000
57600
3500
1750…65535000
115200
3500
1750…65535000
Inter-frame Timeout Minimum Values (11 Bit)
Baud Rate
Default Value
Valid Range (µs)
1200
64000
32000…65535000
2400
32000
16000…65535000
4800
16000
8000…65535000
9600
8000
4000…65535000
19200
3500
1750…65535000
38400
3500
1750…65535000
57600
3500
1750…65535000
115200
3500
1750…65535000
Select Diagnostics to see the diagnostic information of the Modbus Master channel.
Modbus Master Channel Diagnostics Dialog Example
Provide Feedback
Have questions or feedback about this documentation? Please submit your feedback here.
Normal