BusWorks® 965EN Module User’s Manual Modbus TCP/IP mV/TC Input
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Acromag, Inc. Tel:248-295-0880 Fax:248-624-9234 Email:
47
ACT (Yellow)
– Indicates Ethernet
activity
(Ethernet connection is
busy/traffic is present).
Controls:
Reset/Default Address Switch:
This momentary toggle switch is
located on the front panel and is used to either reset the module
(toggle right), or toggle the module into, or out of Default
Communication Mode (toggle left). In Default Mode, the module
assumes the fixed static IP address “128.1.1.100”, a default subnet
mask “255.255.255.0”, a default username of “User”, and a default
password of “password00”. This switch can also be used to restore
the module to its initial factory configuration by holding this switch in
its default position while powering up the unit (see “Getting Out Of
Trouble” in the Troubleshooting section for more information).
The minimum cable required for full operation of this device is Category 5.
The term “Category” refers to classifications of UTP (Unshielded Twisted
Pair) and STP (Shielded Twisted Pair) cables. There are 3 main categories
of cable
– Category 3, Category 4, and Category 5. The differences in
classification is found in their electrical performance and this is documented
in the TIA/EIA 568-A standard.
This device is designed for use in harsh industrial environments. Acromag
recommends the use of shielded cable when wiring to this device. Select
STP (Shielded Twisted Pair) cable rather than UTP (Unshielded Twisted
Pair). The use of shielded cable will help protect the data being transmitted
from harmful EMI (Electromagnetic Interference) and RFI (Radio Frequency
Interference). It will also help to lower your radiated emissions by keeping
the cable from emitting EMI and RFI.
There are two types of cable conductors: solid cable and stranded cable.
Stranded cables are more flexible than solid cables. But since attenuation is
higher for stranded cables than solid conductor cables, these are generally
reserved for short runs and patch applications less than 6 meters.
Currently there are two types of shielding employed in Category 5 STP
cable: single-shielded and double-shielded. Both of these cables have the
same core and jacket as UTP cables, but also include a thin foil outer shield
that covers all four twisted-wire pairs. Variations may include a drain wire
that encircles the outer jacket. A double-shielded version adds an outer wire
screen that surrounds the foil shield and also functions as a drain wire. The
drain wire or wire screen typically makes contact at each end of the cable
with the metal shield around special RJ45 plug connectors. This shield then
makes contact with the metal shield of shielded RJ45 sockets. The socket
shield may make direct contact with earth ground, or it may be capacitively
coupled to earth ground. In the Acromag 9xxEN modules, it makes contact
with earth ground via a high voltage capacitor and transient voltage
suppressor. In addition to separately isolating the shield, this helps to
minimize radio frequency and electromagnetic interference, and has the
added benefit of protection from ESD (Electro-Static Discharge).
Further, Acromag recommends the use of
enhanced
Category 5 cable
(CAT-5e). This cable has all the characteristics of Category 5, but includes
enhancements that help to minimize crosstalk. Category 5e cable has a
greater number of turns-per-inch in its twisted pairs and its performance is
also more suitable for applications that make use of all four wire pairs for
simultaneous bidirectional data transmission (full-duplex). As such, it is
Controls & Indicators
ACCESSORY
CABLES
