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7
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Auto-Negotiation and Speed Sensing
All of the EDS-305-M12’s Ethernet ports independently support
auto-negotiation for speeds in the 10BaseT and 100BaseTX modes, with
operation according to the IEEE 802.3u standard. This means that some nodes
could be operating at 10 Mbps, while at the same time, other nodes are
operating at 100 Mbps.
Auto-negotiation takes place when an M12 cable connection is made, and then
each time a LINK is enabled. The EDS-305-M12 advertises its capability for
using either 10 Mbps or 100 Mbps transmission speeds, with the device at the
other end of the cable expected to advertise in the same way. Depending on
what type of device is connected, this will result in agreement to operate at a
speed of either 10 Mbps or 100 Mbps.
If an EDS-305-M12’s Ethernet port is connected to a non-negotiating device, it
will default to 10 Mbps speed and half-duplex mode, as required by the IEEE
802.3u standard.
Specifications
Technology
Standards
IEEE 802.3, 802.3u, 802.3x
Processing Type
Store and Forward, with IEEE802.3x full duplex,
back pressure flow control
Interface
M12 Ports
10/100BaseTX auto negotiation speed, F/H duplex
mode, and auto MDI/MDI-X connection
LED Indicators
Power, LNK/ACT
Power
Input Voltage
12 to 45 VDC or 18 to 30 VAC (47 to 63 Hz)
Input Current
0.13A @ 24 VDC
0.28A @ 24 VAC
Connection
One M12 socket (A-coding), single power input
Protection
Overload current
protection / Limited
current
1.1A
Reverse polarity
protection
present
Mechanical
Casing
IP67 protection, plastic case
Dimensions (W x H x
D)
60 x 125 x 29.6 mm (2.4 x 4.9 x 1.2 in)
Weight 250g
Installation Field-style
mounting
Environment
Operating Temperature
0 to 60°C for standard model,
-40 to 75°C for -T models
Storage Temperature
-40 to 85ºC
Operating relative
humidity
5 to 95%
(non-condensing)
