Instruction Manual

FTXL User’s Guide 53

network output polled eeprom SNVT_elapsed_tm nvoUsage[3];

fblock UFPTenergyMeter {

nvoWattage[0] implements nvoWattage;

nviAmpere[0] implements nviAmpere;

nviVoltage[0] implements nviVoltage;

nviCosPhi[0] implements nviCosPhi;

nvoUsage[0] implements nvoUsage;

} Meter[3] external_name("Meter") fb_properties {

static cpCoupling

};

The addition of the

SNVT_address

typed network variable

nvoFileDirectory

important for enabling the direct memory files feature for access to the

configuration property files. The LonTalk Interface Developer initializes this

network variable’s value correctly, and creates all required structures and code

for direct memory file access; see

Using Direct Memory Files

on page 96 for more

information.

Alternatively, you can use the LONWORKS File Transfer Protocol (FTP) to access

the file directory and the files in the directory. In this case, you need to

implement the network variables and message tags as needed for the

implementation of a L

ONWORKS FTP server in the model file, and provide

application code in your host to implement the protocol. See the

File Transfer

engineering bulletin at www.echelon.com for more information about the

ONWORKS file transfer protocol.