Difference between revisions of "SHIP:Node:linkset"

From Serious Documentation
Jump to: navigation, search
(→‎Examples)
Line 43: Line 43:
  
  
−
 
−
On the slave side of master/slave protocols (for example the [[SHIP:Protocols#Modbus_Slave_RTU|MODBUS_SLAVE_RTU]]), the link may be representing one or more Modbus slaves within the SHIPEngine environment.  Even though the protocol is running on a single physical communications channel (e.g. UART0), each linkset within the link can act as one of a number of independent virtual slaves.
 
−
 
−
On the master side of master/slave protocols (for example [[SHIP:Protocols#Modbus_Master_ASCII|MODBUS_MASTER_ASCII]]) you may want to address multiple slaves on the channel.  Each slave would be identified by a linkset with the slave ID set appropriately.
 
  
 
Adding two linksets to our prior example might look like this:
 
Adding two linksets to our prior example might look like this:

Revision as of 14:55, 25 November 2012

Within a given link, there may be one or more linkset nodes. Each linkset encompasses all the traffic between two endpoints in a link.

Parent Nodes

The following nodes are permitted to hold this node:

Child Nodes

The following nodes are permitted to exist within this node:

Properties

Property Name Description
name A unique linkset name within the link
id Some protocols require the endpoint to have an ID number assigned
channel A port name (e.g. UART0)

Examples

Example link with two linksets


For example, the following link binds a MODBUS_SLAVE_ASCII protocol to UART0 on a SIM110:

Property Value
name myModbusSlave
protocol MODBUS_SLAVE_ASCII
channel platform.UART0


Adding two linksets to our prior example might look like this:

Example link with two linksets

In this example, our GUI is acting as a Modbus Slave attached to UART0, potentially one of many on the communications channel. This physical channel could be, for instance, a multi-drop RS485 network with many slaves of which our SIM is only one. Our GUI, because it has the two linksets at ID #1 and #13 created, will respond as if it were two of those slaves on the network.

Retrieved from "https://techref.myserious.com/index.php?title=SHIP:Node:linkset&oldid=546"