Webdyn WebdynSunPM - Page 54

54
USER MANUAL – WebdynSunPM
Version 2.05
préliminaire
Parameter
Description
Default value
• E: even parity
StopBits
Number of stop bits between 2 bytes.
The possible values are:
• 1
• 2
1
Wires
The number of wires to use on the serial interface.
The possible values are:
• 2: the same 2 wires are used to send and
receive data frames
• 4: data emission and reception use separate
pairs of wires
2
Protocol
The protocol type for this serial interface.
The possible values are:
• modbusRTU: the serial port is reserved for
modbus RTU communications
• smanet: the serial port is reserved for
communication with devices that use the
SMA-Net protocol.
• PW1: the serial port is configured to use
devices that use the PowerOne protocol.
modbusRTU
InterFrame
The waiting time between 2 frames exchanges on
the serial port. This time is expressed in ms.
See below for a detailed explanation of how this
parameter operates.
0
Forwarded TCP
port
Forwarded TCP port.
If there is a value in this field, the concentrator
opens a modbusTCP port on the entered port
number.
When modbusTCP devices connect to this port, all
sent requests are directly forwarded to the
modbusRTU bus and the response is returned to the
connected device using this modbusTCP port.
This option is used to create a communication
tunnel between modbusTCP devices and the local
modbusRTU network.
The requests are slotted between the
concentrator’s internal monitoring requests.
The “InterFrame” parameter is used to define a silence time on the serial bus to allow certain
devices to switch to waiting for data. Some manufacturers call this the “return time”.
The operating principle is the following: