PLX3x Series ♦ Multi-Protocol Gateways MBTCP Protocol
User Manual
ProSoft Technology, Inc. Page 101 of 215
January 25, 2018
Modbus Message Routing: Port 2001
When Modbus messages are sent to the PLX3x gateway over the TCP/IP
connection to port 2001, the messages are routed by the gateway directly out the
serial communication port (Port 0, if it is configured as a Modbus master). The
commands (whether a read or a write command) are immediately routed to the
slave devices on the serial port. Response messages from the slave devices are
routed by the gateway to the TCP/IP network to be received by the originating
host.
6.2 MBTCP Configuration
6.2.1 Configuring MBTCP Servers
This section contains database offset information used by the PLX3x gateway
MBTCP server when accessed by external clients. You can use these offsets to
segment the database by data type.
To configure the MBTCP Servers in PCB
1 In ProSoft Configuration Builder, click the [+] next to the gateway, then click
the [+] next to MBTCP Servers.
2 Double-click the second MBTCP Servers to display the Edit - MBTCP
Servers dialog box.
3 In the dialog box, click a parameter and then enter a value for the parameter.
Note that the Float Start and Float Offset parameters only appear if you set
Float Flag to Yes.
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