ES2 Ethernet/SIOX Gateway p 3
Installation and Startup
The ES2 unit is intended for installation on standard DIN-rails conforming to
EN50022 (DIN46277-3). The unit should be located inside an enclosure prohibiting
access by unauthorized personnel.
The ES2 is a bus master that supplies current to the SIOX bus in the same way as,
for instance, the K32 unit does. As a consequence, there is no galvanic isolation
between the supply and the bus.
Please note that the ES2 unit has to be configured in order to become operative.
This involves setting parameters such as IP-address, subnet mask and SIOX baud
rate. Normally, configuration has to be done before the unit is installed, mainly
because the factory default IP-address will rarely match the intended network.
Please refer to 'Configuration' on page 4.
The following electrical connections have to be made:
1. Connect a 10BaseT Ethernet cable to the RJ-45 connector. For industrial
environments this cable should be shielded for the unit to comply with the
more stringent EMC requirements.
2. If a DC supply is used:connect the positive supply to screw terminal 1 and
the negative supply to screw terminal 2. The supply voltage range is 18 - 35
V DC.
If an AC supply is used: if one of the two supply wires is regarded as
“ground”, connect it to terminal 2 and the other to terminal 1. The supply
voltage range is 12 - 24 V AC.
3. Connect the SIOX bus to screw terminals 7 and 8. Normally, the bus can be
connected unpolarized, i.e. either way, unless there are SIOX modules
connected to the bus that are sensitive to the polarity. Terminal 7 is the
positive bus terminal whereas terminal 8 is the negative. Note that the
negative supply screw terminal 2 is internally connected to terminal 8.
4. If the Digital Inputs DI1-DI4 will be used, connect the external signals to the
screw terminals 3 - 6. These inputs will accept both DC and AC voltages in
the range 0 - 35 V DC and 0 - 24 V AC.
The SIOX modules should be interconnected through a two-wire, low capacitance
twisted pair. Shielded cables may be used but unless a correct strategy for shield
grounding is adopted, it may prove to be of little benefit. Instead, the capacitance
between the shield and the bus wires will add to the total capacitive load on the
ES2 Ethernet/SIOX Gateway p 4
SIOX bus and decrease the maximum distance over which communication can be
carried out for a given bit rate. The total resistance of the bus should normally not be
higher than 2 * 50E.
Provided the ES2 unit is properly configured, it will now be ready for operation.
After power is applied to the unit, check the yellow Link LED, located on the left side
of the RJ-45 connector. It will be activated if there is a working connection to
another network unit. The green Activity LED, located on the right side of the RJ-45
connector will flash when there is activity on the Ethernet.
Power Supply
As stated, power supply input voltage range is 18 - 35 V DC or 12 - 24 V AC. Power
consumption, SIOX excluded, is approximately 1,5 W during normal operation within
specified supply voltages. Maximum power consumption will occur if the SIOX bus
is accidentally shorted. At 35 V DC supply, up to 5 W may be dissipated. To insure
that the unit will always be able to start, even with a shorted SIOX bus, the supply
must be capable to output at least 300 mA.
Configuration
Before the unit can be operative it has to be configured for the task. This is
accomplished by communicating with the unit thru an Ethernet connection in
compliance with the SIOX Net protocol. By doing so, a few configuration parameters
can be changed.
Preferably, use a network cable and connect the unit directly to the computer that
will be used for configuration. If the unit is connected directly to a LAN (Local Area
Network), there is a small possibility that the unit's IP-address will be the same as
some other equipment. This will disturb the operation of the other system. Please
contact the network administration to check this out.
If not already accomplished, download and install the Visual Setup software from
www.siox.com. Also download the ES2setup.dff which, when run by the Visual
Setup, will provide a configuration interface for the ES2 unit. At the same time it is a
good idea to download setup dff-files for other module types that are used as well.
When all is working, the ES2 unit will act as a virtual SIOX module accessible on
one SIOX address in the range 1 - 63 depending on earlier configuration. This
address cannot be used by other SIOX modules. Factory default address is 63,
