# 16.1 At command ### Overview At command protocol is used for communications with AT Commands. ### Configuration ##### At command parameters for the *Device* tab
**Parameter** **Type** **Description** **Required **Default value** (when not specified) **Range**
Min Max
namestring User-friendly device nameYes
descriptionstringDescription of a deviceNo
device\_aliasstringAlphanumeric string to identify a deviceYes
enablebooleanEnabling/disabling of a deviceNo101
protocolstringProtocol to be used.Yes at command
devicestringCommunication portYes PORT1PORT2
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 optionNononenone, even, odd
flowcontrolstringCommunication device flow control option.Nononenone
timeout\_msintegerTimeout of waiting for incoming requests in millisecondsYes 060000
serial\_close\_delayintegerDelay before closing serial portNo400
##### At command 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