Modbus Port X Parameters - ProSoft Technology CompactLogix MVI69E-MBS User Manual

MVI69E-MBS ♦ CompactLogix™ Platform
Modbus Serial Enhanced Communication Module

3.2.2 Modbus Port x Parameters

This section applies to both MBS P
In the ProSoft Configuration Builder tree view, double-click the M
Configuration Parameters Common to Master and Slave
Parameter
Start Active
Type
Protocol
Baud Rate
Parity
Data Bits
Stop Bits
RTS On
RTS Off
Use CTS Line
Float Flag
ProSoft Technology, Inc.
ORT
Value Description
Yes or No Specifies whether or not the port and commands are active
upon module boot-up.
Master, Slave, This parameter specifies which device type the port emulates.
or Slave with See Slave Mode (page 72) for more information on Slave
Pass-Through options.
Pass-Through
RTU or ASCII Specifies the Modbus protocol for the port.
Multiple options Specifies the baud rate for the port.
None, Odd, Specifies the type of parity error checking. All devices on this
Even port must use the same parity setting.
7 or 8 Sets the number of data bits for each word used by the
protocol. All devices communicating through this port must use
the same number of data bits.
1 or 2 Sets the number of stop bits that signal the end of a character
in the data stream. For most applications, use one stop bit. For
slower devices that require more time to re-synchronize, use
two stop bits. All devices communicating through this port must
use the same number of stop bits.
0 to 65535 Sets the number of milliseconds to delay after Ready To Send
milliseconds (RTS) is asserted before data is transmitted.
0 to 65535 Sets the number of milliseconds to delay after the last byte of
data is sent before the RTS modem signal is set low.
milliseconds
Yes or No Specifies if the Clear To Send (CTS) modem control line is to
be used or not. If you set the parameter to N
not monitored. If you set the parameter to Y
monitored and must be high before the module sends data.
Normally, this parameter is required when half-duplex modems
are used for communication (2-wire). This procedure is
commonly referred to as hardware handshaking.
Yes or No Specifies how the Slave driver responds to Function Code 3, 6,
and 16 commands (read and write Holding Registers) from a
remote Master when it is moving 32-bit floating-point data.
Note: Most applications using floating-point data do not need
this parameter enabled.
Configuring the MVI69E-MBS Using PCB
1 and MBS P 2.
ORT
User Manual
P icon.
ODBUS ORT X
, the CTS line is
O
, the CTS line is
ES
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