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glossary:rpcsystem [2013/04/15 12:12]
Gordon H [RPC Remote Panel Control]
glossary:rpcsystem [2018/11/19 16:43] (current)
Bob Vetterlein [Links]
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 ====== RPC Remote Panel Control ====== ====== RPC Remote Panel Control ======
  
-<p> +[[start|Return to main Glossary index]]\\  
-A system for the remote control of model railway layouts, devised by long term MERG member Gordon Hopkins. ​<br/>+==== Overview ==== 
 +A system for the remote control of model railway layouts, devised by long term MERG member Gordon Hopkins. ​\\
 The system consists of a 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 interface, or one another, forming 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… The system consists of a 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 interface, or one another, forming 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…
-</p>+
  
  
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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 ==== ==== Links ====
-[[http://​www.nottingham-modelrailway.org.uk/​carstairs.htm|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. \\ [[http://​www.youtube.com/​watch?​v=HdhIxprIeR4|Horton]] presented by the late Stephen Parascandolo. +[[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.1366027957.txt.gz · Last modified: 2014/11/11 13:28 (external edit)