# 16.4 Delta ### Overview Delta protocol is used to communicate with Delta inverters over serial communication. ### Configuration ##### Delta parameters for the *Device* tab
**Parameter** **Type** **Description** **Required **Default value** (when not specified) **Range**
Min Max
namestringUser-friendly device nameYes
descriptionstringDescription of the deviceNo
device\_aliasstringDevice alias to be used in configurationYes
enablebooleanEnabling/disabling of a deviceNo101
protocolstringSelection of protocolYes Delta
baudrateintegerCommunication speed (bauds/s)No9600300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
databitsintegerData bit count for communicationNo869
stopbitsintegerStop bit count for communicationNo112
paritystringCommunication parity option (”none”/”even”/”odd”)NononeNone, Even, Odd
flowcontrolstringCommunication device flow control option. (Default: (case-sensitive): ”none”)Nonone
scan\_rate\_msintegerIf provided and positive ­ all reads and writes will be executed within the timeframe in milliseconds.No10000
poll\_delay\_msintegerMinimum time delay in milliseconds to wait before sending any data on port.No200
timeout\_msintegerTimeout in millisecondsYes 060000
idintegerInverter IDYes0
devicestringCommunication portYes PORT1PORT2
##### Delta parameters for the *Signals* tab
**Parameter** **Type** **Description** **Required **Default value** (when not specified) **Range**
Min Max
signal\_namestring User-­friendly signal name Yes
device\_aliasstring Device alias from a Devices tab Yes
signal\_aliasstring Unique alphanumeric name of the signal to be used Yes
enableboolean Enabling/disabling of an individual signal No10 1
loginteger Enable logging in the event log No0
number\_typestringType of a number (FLOAT, DOUBLE, DIGITAL, etc.)Yes
job\_todostring Tag job as single or multiple comma-separated OBIS codes Yes
tag\_job\_todostringTag sub jobYes
pulse\_short\_time\_msintegerThe time interval for a short output pulse to stay activeNo0
pulse\_long\_time\_msintegerThe time interval for a long output pulse to stay activeNo0