Rockwell Automation Publication 2711R-UM001I-EN-E - February 2023 83
Chapter 3 DesignStation in Connected Components Workbench Software
Zero Based
Addressing
By default, user-entered addresses have one subtracted
when frames are constructed to communicate with a
Modbus device. If the device does not follow this
convention, clear the checkbox to disable this parameter.
•Enabled
•Disabled
Block Size See Block Size Parameters on page 83 for more information.
Response Timeout
Milliseconds
Specify how long the terminal waits for the controller to
respond to a communication request.
100…30000
Fail After
Specify the number of times the terminal repeats the
communication request before the request is considered
a failed attempt, and the controller is in error.
1…10
PanelView 800 Settings (only when Ethernet Encapsulation is not enabled)
Port Select the port on the terminal to use. RS232, RS422/485 (Half Duplex)
Baud Rate Select the maximum communication rate.
300, 600, 1200, 2400, 4800,
9600, 14400, 19200, 38400,
57600, 115200
Parity Specify the type of parity for the data. None, Odd, Even
Stop Bits Specify the number of stop bits per data word. 1…2
Flow Control
This option asserts the RTSline when the communication
port is opened and remains on.
RTS Always
(cannot be changed)
Data Bits The number of data bits per data word.
8
(cannot be changed)
Block Size Parameters
Parameter Description Value
Output Coils Sets the block size of the output coils.
8…2000
(in multiples of 8)
Input Coils Sets the block size of the input coils.
8…2000
(in multiples of 8)
Internal Registers Sets the block size of the internal registers. 1…120
Holding Registers Sets the block size of the holding registers. 1…120
Modbus RTU Communication Parameters (Continued)
Parameter Description Value
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