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ClassNet Terminal User Manual 

 

13

Although the Intelligent RS-485 Adaptor is normally used at one end of 
the cable, there is no reason why the adaptor cannot be installed at some 
point along the cable.  This method of wiring may be more convenient in 
some installations.  Note, however, that the cable must be terminated 
only at the ends.  So if an Intelligent Converter starts a network, 
termination will be at the Intelligent Converter and the last ClassNet 
Terminal.  If the Intelligent Converter is installed elsewhere on the 
network, it will not have a terminator fitted, and termination will be on 
the Terminals at each end. 

The ClassNet Terminal cabling 
must be run from one unit to the 
next, which is often called daisy-
chained cabling.  In a typical 
installation, one section of cable is 
connected to the Intelligent RS-485 
Adaptor, and this section runs to 
the first ClassNet Terminal.  
Another section of cable is run 
from this ClassNet Terminal to the 
next ClassNet Terminal, and so on, 
as shown in the diagram on the 
right. 

Because of the low data rate used by the ClassNet Terminal, it is 
acceptable to use a small number (no more than two or three) RJ-45 
joiners in the network cabling.  ASP can supply special RJ-45 joiners 
with pins 1, 2, 7 and 8 removed – these can be used to isolate the power 
supply connections if necessary. 

ASP can also supply short RJ-45 to D9 adaptor cables so that you can use 
the previous version of the ClassNet Terminal (which had a D9 connector 
instead of RJ-45) in a network with the current model.  These adaptors 
can also be used if you need to install a current ClassNet Terminal into a 
ClassNet network wired for the older terminals. 

Cable Termination 

For proper operation, the data wires of the network cable must be 
terminated at each end.  Both the ClassNet Terminals and the Intelligent 
RS-485 Adaptor are fitted with internal terminating resistors, which are 
enabled via a jumper. 

Network Expansion 

Provided the cabling is correctly installed and terminated, RS-485 
networks allow a maximum total cable length of 1200 metres, and can 

Содержание ClassNet

Страница 1: ...s 14 Business Park Drive Notting Hill Victoria 3168 Australia Telephone 03 9578 7600 Fax 03 9578 7727 Email solutions asp com au www asp com au ASP Microcomputers is a division of Grayline Holdings Pt...

Страница 2: ......

Страница 3: ...a IDTag 7 Collecting Data from your ClassNet Terminals 7 ClassNet Anywhere 7 ClassNet Polling Program 7 ClassNet DataTag Utility 8 Installation 10 Setting the Network ID 11 RS 485 Network Cabling 12...

Страница 4: ...like a lithium battery and is fitted to a key tag or card The ClassNet Terminal is normally powered by a low voltage plug pack and connected on a simple two wire daisy chained RS 485 network cable to...

Страница 5: ...ck to a computer where an Intelligent RS 485 Adaptor is installed Software running on the computer such as ASP s Polling Program automatically downloads the collected data over the cable on a schedule...

Страница 6: ...TimeTag which is configured using the ClassNet DataTag Utility See the section later in the manual for details on how to use the ClassNet Terminal with DataTags Barcodes or IDTags The ClassNet Termin...

Страница 7: ...the fixed location of the slot reading mechanism The centre of the barcode must be 9 5mm from the outside edge of the card and if the card is laminated remember to include this in the calculation of t...

Страница 8: ...DTags are normally supplied as part of a key tag but they can optionally be attached to cards or other devices by adhesive or press fit stainless steel retainers If you have any special requirements p...

Страница 9: ...e polled according to a Schedule Units are individual ClassNet Terminals One or more units are connected by RS 485 cabling to an Intelligent RS 485 Adaptor which is connected to the serial port of a P...

Страница 10: ...column shows the number of items downloaded from the terminal If for some reason a terminal does not respond to a poll a dark blue question mark is displayed to the left of the Unit Number column and...

Страница 11: ...show you the data that has been downloaded or to display various messages When you remove the tag the window will close and the DataTag Utility will return to the system tray next to the clock at the...

Страница 12: ...l using a 2mm Allen Key Then pull the bottom of the case forward off the bottom of the stainless steel plate which also forms the bottom of the scanning slot and lift the ClassNet Terminal slightly to...

Страница 13: ...d without the expense of a technician Should you decide to take this self reliant approach we suggest one person be appointed to this role This person should also maintain records of all installed uni...

Страница 14: ...network ID number for a short time and it will sound a beep to signal that the network ID number has been set If you make a mistake while setting the network ID number you should continue setting it t...

Страница 15: ...Net Terminal to the next ClassNet Terminal and so on as shown in the diagram on the right Because of the low data rate used by the ClassNet Terminal it is acceptable to use a small number no more than...

Страница 16: ...pplied over the CAT5 network cable The Intelligent RS 485 Adaptor requires 9 to 18 volts DC at 100mA which is normally supplied by a 9v DC 300mA plug pack power supply via a centre positive 2 5mm DC c...

Страница 17: ...The two RJ 45 connectors are wired in parallel to facilitate the daisy chain wiring scheme that the ClassNet Terminal network requires As noted above the ClassNet Terminal CANNOT be connected to an Et...

Страница 18: ...read since the last download and therefore has not been stored again POLL Data is being retrieved from the ClassNet Terminal Wait until the time display returns before using the terminal CLR The down...

Страница 19: ...or example with 8 character barcodes 1875 scans would fit in memory ie 30000 8 8 1875 while 1304 IDTags would fit ie 30000 16 7 1304 Network Up to 31 ClassNet Terminals can be attached to a single RS...

Страница 20: ...e required to correct the interference at his or her expense Warranty To the extent permitted by law ASP s warranty in respect of the ClassNet Terminal and the Intelligent RS 485 Adaptor and their use...

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