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glossary:rpcsystem [2013/04/15 09:13]
Bob Vetterlein [Overview]
glossary:rpcsystem [2018/11/19 16:43] (current)
Bob Vetterlein [Links]
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 ====== RPC Remote Panel Control ====== ====== RPC Remote Panel Control ======
  
 +[[start|Return to main Glossary index]]\\ ​
 ==== Overview ==== ==== Overview ====
-A system for the control of model railway layouts, devised by long term MERG member Gordon Hopkins. \\ The system consists of the PC interface RPI and a number of modules ​which plug directly to the interface or one another forming what is refered to as a stackThis system is documented in the MERG TB series G16...+A system for the remote ​control of model railway layouts, devised by long term MERG member Gordon Hopkins. \\ 
 +The system consists of PC interface ​module known as the RPIC (or RPI, see below) ​and a number of general purpose or special purpose Input/​Output ​modules ​designed to plug directly to the interfaceor one anotherforming what is refered to as a module '​Stack'​Options also exist to use the Input/​Output modules without a PC interface. The system is documented in the MERG TB series G16… 
 + 
  
 ==== RPI ==== ==== RPI ====
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 ==== The Stack ==== ==== The Stack ====
-Connectors on the stack modules carry power lines 0V and +5V for the electronics on each board, attached devices may require separate supplies. There are four control lines, these are Data out, Data in, Clock and Strobe. When the interface receives a message the Strobe line is activated in order to read the current state of Inputs into the shift registers. The Clock is then activated in multiples of 8 pulses and data is sent out and received by the interface. When shifting is complete the Strobe line is activated again to output the new data to the layout devices. +Connectors on the stack modules carry power lines 0V and +5V for the electronics on each board, attached devices may require separate supplies. There are four control lines, these are Data out, Data in, Clock and Strobe. When the interface receives a message the Strobe line is activated in order to read the current state of Inputs into the shift registers. The Clock is then activated in multiples of 8 pulses and data is sent out and received by the interface. When shifting is complete the Strobe line is activated again to output the new data to the layout devices. ​See [[:​glossary:​shiftinout| here]] for an illustrated explanation of Shift Register operation.
  
 +==== PTP ====
 +Point to Point, is the designation for a self contained %%RPC%% system consisting of two identical PTP interface modules connected by a 4 pair (cat 5) data cable. One module is fitted with a link that designates it as the Master which controls the data flow to and from the Slave module. Each of these modules has a '​stack'​ where the Input on one module matches the Output on the other and vice versa. Thus an input change at one end becomes an output change at the other end. 
 +The PTP system operates independently,​ requiring no computer interface module, and accommodates up to 960 inputs and outputs from both ends simultaneously,​ with an update rate of approximately 20 times per second.
 +==== Links ====
 +[[http://​www.nottingham-modelrailway.org.uk/?​page_id=125|Carstairs]] at the Nottingham club. \\ [[http://​www.youtube.com/​watch?​v=h1txQ4AlaFY|Around Carstairs]] from the cab \\ [[http://​www.stroleycentral.co.uk/​myfavouritelayouts3.htm|Pictures]] of Carstairs and Dagworth both of which use %%RPC%%. The links on this page to Owners'​ websites are both out of date. \\ [[http://​www.youtube.com/​watch?​v=HdhIxprIeR4|Horton]] presented by the late Stephen Parascandolo.\\ ​
 +[[glossary:​exhibition_stand|MERG Demo stand]]\\ ​
glossary/rpcsystem.1366017192.txt.gz · Last modified: 2014/11/11 13:28 (external edit)