4101-2 Controller Installation Handbook
iv
Output indications.........................................................................7-7
Chapter 8 4230/4232/4235 Communications modules
Hardware Systems ...................................................................................8-1
Local Hardware Systems ................................................................8-1
Remote Site Hardware Systems ......................................................8-1
Which Comms module do you need? ........................................................8-1
One or two Controller system .........................................................8-2
Controllers at remote sites..............................................................8-3
4-wire RS485 multidrop comms ...............................................................8-3
RS232/RS485 conversion and baud rate conversion.................................8-3
Maximum of two Comms modules in any one 4101-2 Controller ...............8-3
Connectors, jumpers, switch and LEDs ....................................................8-4
Comms layouts........................................................................................8-6
The most common system - 1 Comms module ................................8-6
Expanded system using two Comms modules.................................8-7
Expanded system - at least three Comms modules..........................8-8
Extending the length of a branch....................................................8-8
Using a leased-line and modems to operate the system
across sites....................................................................................8-9
Using one or more dial-up modems to communicate with
Controllers at remote sites............................................................8-10
Summary of upstream and downstream connections to a Comms
module ..................................................................................................8-11
Connecting ............................................................................................8-11
Connecting the Comms module to the computer and Controllers ......8-12
Connecting the host computer to the Comms module....................8-13
Connecting Controllers to a Comms module..................................8-14
Connecting downstream Comms modules ........................................8-15
Connecting a Comms module to a modem at a remote site ...............8-16
Setting up Comms modules....................................................................8-17
Notes about installing Comms modules .................................................. 8-18
LEDs .....................................................................................................8-18
Power up (Comms modules with DIR/DIAL link set to DIR) ........... 8-18
Power up (Comms modules with DIR/DIAL link set to DIAL) .........8-19
Running ......................................................................................8-19
Chapter 9 4105-2 Memory Expansion module
Description..............................................................................................9-1
Installation ..............................................................................................9-1
Installing a 4105-2 Memory Expansion module in a 4101 Controller ..9-2
Chapter 10 4210 RF module
Description............................................................................................ 10-1
Installing the RF module and teaching the Controller its
Distributor Code ....................................................................................10-1
The Controller can only learn the Distributor Code once -
you cannot change it once learned................................................ 10-2
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