Difference between revisions of "CV 28"

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(major overhaul to bring the table up to date with RCN-217 documentation available on the railcommunity website.)
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== NMRA CV 28 - Bi-Directional Communication Configuration (RailCom®) ==
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==NMRA CV 28 - Bi-Directional Communication Configuration (RailCom®)==
This CV is used to configure decoder’s bi-directional communication characteristics when RailCom is enabled in [[{{NAMESPACE}}:CV_29|CV 29]].<br/>
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This CV is used to configure decoder’s bi-directional communication characteristics when RailCom is enabled in [[{{NAMESPACE}}:CV_29|CV 29]].  
Note: If the decoder does not support a feature contained in this table, it shall not allow the corresponding bit to be set improperly. E.G. if a decoder does not support RailCom, this CV will read 0 and will not accept any values to be programmed to it.  
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If the decoder does not support a feature contained in this table, it shall not allow the corresponding bit to be set improperly. E.G. if a decoder does not support RailCom, this CV will read 0 and will not accept any values to be programmed to it. Additionally, the decoder should not allow you to enable a feature within the table below which is not supported. 
  
 
{| class="wikitable" style="text-align: center;"
 
{| class="wikitable" style="text-align: center;"
 
|-
 
|-
! scope="col"| Feature
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!Bit
! scope="col"| Description
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! scope="col" |Value
! scope="col"| Default
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! scope="col" |Feature
! scope="col"| Value
+
! scope="col" |Description
 +
! scope="col" |Default
 +
!Supported by TCS
 +
|-
 +
|0
 +
|1
 +
! scope="row" |Channel 1
 +
|If enabled, Channel 1 will broadcast the address.
 +
|ON
 +
|YES
 +
|-
 +
|1
 +
|2
 +
! scope="row" |Channel 2
 +
|If enabled, Channel 2 will send and receive data and provide acknowledgements.
 +
|ON
 +
|YES
 +
|-
 +
|2
 +
|4
 +
!Auto Channel 1
 +
|Automatically Turn off Channel 1
 +
|OFF
 +
|
 +
|-
 +
|3
 +
|8
 +
!(Reserved)
 +
|''Not Used''
 +
|N/A
 +
|
 +
|-
 
|-
 
|-
! scope="row"| Channel 1
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|4
| If enabled, Channel 1 will broadcast the address.  
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|16
| ON
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! scope="row" |Programming Address 253
| 1
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|Serves as a programming lock. If this setting is disabled, programming address 253 will be locked.
 +
|ON
 +
|YES
 
|-
 
|-
! scope="row"| Channel 2
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|5
| If enabled, Channel 2 will send and receive data and provide acknowledgements.
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|32
| ON
+
!(Reserved)
| 2
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|''Not Used''
 +
|N/A
 +
|
 
|-
 
|-
 +
|6
 +
|64
 +
!Current Limit
 +
|If enabled, the higher current limit for RailCom will be enabled
 +
|OFF
 +
|
 
|-
 
|-
! scope="row"| Programming Address 253
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|7
| Serves as a programming lock. If this setting is disabled, programming address 253 will be locked.
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|128
| ON
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!Automatic Login
| 16
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|If enabled, allows automatic login
 +
|OFF
 +
|
 
|-
 
|-
  
 
|}
 
|}
<noinclude>
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''Note: The table above is based upon the RailCom Specification RCN-217 as of 12-12-2021 and as such is potentially subject to change. Additionally, the last column in this table "supported by TCS" is only true for current production decoders which support RailCom, and may be untrue for specific decoders and/or decoder versions ([[CV 7]], or [[Diesel Version 5:CV 110|CV 110]]/[[Diesel Version 5:CV 111|CV 111]]) designed using an older revision of RCN-217.'' <noinclude>
[[Category:Standard CV]][[Category:Bitwise CV]]
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[[Category:Standard CV]]
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[[Category:Bitwise CV]]
 
</noinclude>
 
</noinclude>

Revision as of 00:36, 23 June 2022

CV 28
RailCom Configuration
Range of Values0-255
Accepted Values0-255
Default Value19 (Varies)

NMRA CV 28 - Bi-Directional Communication Configuration (RailCom®)

This CV is used to configure decoder’s bi-directional communication characteristics when RailCom is enabled in CV 29.

If the decoder does not support a feature contained in this table, it shall not allow the corresponding bit to be set improperly. E.G. if a decoder does not support RailCom, this CV will read 0 and will not accept any values to be programmed to it. Additionally, the decoder should not allow you to enable a feature within the table below which is not supported.

Bit Value Feature Description Default Supported by TCS
0 1 Channel 1 If enabled, Channel 1 will broadcast the address. ON YES
1 2 Channel 2 If enabled, Channel 2 will send and receive data and provide acknowledgements. ON YES
2 4 Auto Channel 1 Automatically Turn off Channel 1 OFF
3 8 (Reserved) Not Used N/A
4 16 Programming Address 253 Serves as a programming lock. If this setting is disabled, programming address 253 will be locked. ON YES
5 32 (Reserved) Not Used N/A
6 64 Current Limit If enabled, the higher current limit for RailCom will be enabled OFF
7 128 Automatic Login If enabled, allows automatic login OFF

Note: The table above is based upon the RailCom Specification RCN-217 as of 12-12-2021 and as such is potentially subject to change. Additionally, the last column in this table "supported by TCS" is only true for current production decoders which support RailCom, and may be untrue for specific decoders and/or decoder versions (CV 7, or CV 110/CV 111) designed using an older revision of RCN-217.