Webdyn WebdynSunPM, User Manual

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USER MANUAL – WebdynSunPM
Version 2.05
préliminaire
The Ethernet ports each support and include:
•
A 10Base / 100Base-Tx IEEE 802.3 link
•
2 indicators:
o
“Link” (green): Used to check that the physical link with another network device
is available.
o
“Status” (orange): Used to view network traffic. It flashes depending on the
traffic.
•
Automatic signal detection and crossing,
•
A speed (10/100 Mbps) and mode (half/full duplex) auto-negotiation.
If you want to connect several IP devices to the same network, the devices must
have different IP addresses but belong to the same subnet. Never use the same IP
address twice.
2.4.6 RS485/RS422 Serial interface
The WebdynSunPM concentrator has 3 RS485/RS422 serial ports marked “Serial” on the
bottom of the product which are only used for modbus in RTU mode. This interface is Half
Duplex (2 wires) and Full Duplex (4 wires) compatible.
If several modbus RTU devices are connected, “serial” or “daisy chain” wiring is required. The
cable arrives at a modbus module and exits towards the next one.
To guarantee proper data bus operation, an RS485 bus must feature a 120 Ohm terminator at
each end. The WebdynSunPM concentrator can be at the end of the RS485 communication
bus or in the middle. As the concentrator has a 120 Ohms resistor, it made need to be enabled
depending on the concentrator position on the bus. (See wiring below)
There are 3 separate considerations for the choice of cable type:
Serial port 1
Serial port 2
Serial port 3