cbus:overview-en
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+ | ====== CAN-GCA Overview ====== | ||
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+ | \\ | ||
+ | ^ [[: | ||
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+ | =====CAN===== | ||
+ | GCA CBUS supports a small subset of the CBUS protocol.\\ | ||
+ | //CBUS protocol documents are a copyright of Mike Bolton and Gil Fuchs//\\ | ||
+ | \\ | ||
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+ | ===== Professional boards & kits ===== | ||
+ | < | ||
+ | :!: //Only Kits bought from **[[http:// | ||
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+ | \\ | ||
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+ | ===== CANBUS - A universal layout control system ===== | ||
+ | CAN-GCA module firmware is based on CAN using the industrial [[http:// | ||
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+ | ===== Example Network ===== | ||
+ | {{: | ||
+ | {{: | ||
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+ | ===== Bus termination ===== | ||
+ | [[http:// | ||
+ | The very high noise immunity is achieved by ensuring that the differential impedance of the bus is maintained at a very low level using low value resistors (120 ohms) mounted at each end of the bus. \\ | ||
+ | | On all CAN-GC boards this termination resistor is already mounted and can be activated by setting a jumper. | \\ | ||
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+ | \\ | ||
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+ | ===== Connection cable ===== | ||
+ | The best suitable cable for connection between all CAN-GCx modules is [[http:// | ||
+ | Almost any computershop or DIY Market sells this cable for pretty low prices. (e.g. Reichelt [[http:// | ||
+ | {{ https:// | ||
+ | ^ DB9 \\ Pin ^ Function ^ CAT-5 color ^ Remark ^ | ||
+ | | **1** | GND | brown/ | ||
+ | | **6** | GND | green/ | ||
+ | | **2** | DCC-B | orange/ | ||
+ | | **7** | CANL | blue/ | ||
+ | | **3** | LN | green | LN, LocoNet, for mixed systems | | ||
+ | | **8** | CANH | blue | mandatory¹ | | ||
+ | | **4** | DCC-A | orange | ||
+ | | **9** | //Not used// | ||
+ | | **5** | +12V | brown | mandatory¹ | | ||
+ | |||
+ | ¹) Minimal cable configuration.\\ | ||
+ | {{ : | ||
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+ | \\ | ||
+ | Pin 2 and 4 are __only needed when ORD-3__ booster is used in the same system.\\ | ||
+ | Changing wire colours could cause errors.\\ | ||
+ | \\ | ||
+ | |||
+ | ====Links==== | ||
+ | ===Reichelt Elektronik=== | ||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | * [[http:// | ||
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+ | \\ | ||
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+ | ====Alternative cable==== | ||
+ | | For testing and small layouts. |\\ | ||
+ | Standard full wired male to female **extension** RS232 cables are allowed, but up to a certain limit. (e.g.: Reichelt [[http:// | ||
+ | It is never experienced how many can be used. A few will not disturb the communication, | ||
+ | |||
+ | \\ |