High Country Tek emc-3L - Manual (Page 75)

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6.5 DVC to DVC
Multiple DVC710s can talk to one another over the CAN Bus. The DVC to DVC configuration screen has a
MAC ID, four Send Uint Names, and four Receive Uint Names. Uint refers to the unsigned integer designation.
The MAC ID field is the MAC ID of the DVC710 to whom this DVC710 wishes to communicate with and must be
specified. Send Uint Names 1 - 4 are the names used to access the values to be made available to (sent to) the
other DVC710. Receive Uint Names 1 - 4 are the names used to access the values to be received from the
other DVC710. The send messages are sent periodically by the DVC710s to each other. The receive Uint
names can be used in the program logic.
When you wish to communicate more than four integer values between DVCs you will need to implement a
simple protocol. One way to do this is to use the first Send Uint Name as a message identifier with the actual
data being the other three Send variables. In the receiving DVC you would interrogate the first variable and set
the appropriate variables in you code.
Large projects that incorporate many DVC710 modules should consider being implemented by using J1939
messages to transmit the information to other modules.
Configuration Set-up
Name:
The prefix name for the send and receive variables for this DVC710 to use.
Range: 16 characters
MAC ID:
The MAC ID of the DVC710 to be communicated with.
Range: 0 to 63.
Send Uint Name 1 - 4:
This is the variable suffix Name for sending the data to the other DVC710.
Range: 16 Characters with no spaces. Usable characters are A-Z, a-z, 0-9, and "_".
Rules:The first character cannot be a number. Compiler Keywords or other Names already in use are not valid.
Receive Uint Name 1 - 4:
This is the variable suffix Name for the data sent from the other DVC710.
Range: 16 Characters with no spaces. Usable characters are A-Z, a-z, 0-9, and "_".
Rules: The first character cannot be a number. Compiler Keywords or other Names already in use are not
valid.
DVC to DVC Program Variables
Name.Status
Set/Get the state of DVC to be communicated with.
Name.SendName1
Set/Get the current value of that variable.
Range: 0 to 65535
Name.SendByte1Bit0,... Name.Sendbyte1.Bit15
Set/Get the current bit value of that variable.
Range: 0 to 1
P/N: 021-00163, Rev. A.0 - for V5.2 Tools Page | 75