NPort W2150/2250 Plus Series User’s Manual Ethernet Modem Commands
C-2
Disconnection Request from Remote Site
After the TCP connection has been closed by the remote Ethernet modem or PC, the NPort will
send “NO CARRIER” to the serial port and will return to command mode.
AT Commands
Ethernet Modem mode supports the following common AT commands, as used with a typical
modem:
No. Command Description Remarks
1 ATA Answer manually
2 ATD Dial up specified IP address and port number
ATD 192.168.1.1:950 (example)
3 ATE ATE0=Echo OFF
ATE1=Echo ON (default)
4 ATH ATH0=On-hook (default)
ATH1=Off-hook
5 ATI, ATI0,
ATI1, ATI2
Modem version reply “OK” only
6 ATL Speaker volume option reply “OK” only
7 ATM Speaker control option reply “OK” only
8 ATO On line command
9 ATP, ATT Set Pulse/Tone Dialing mode reply “OK” only
10 ATQ0,
ATQ1
Quiet command (default=ATQ0)
11 ATSr=n Change the contents of S register see “S registers”
12 ATSr? Read the contents of S register see “S registers”
13 ATV Result code type
ATV0 for digit code,
ATV1 for text code (default)
0=OK
1=connect
2=ring
3=No carrier
4=error
14 ATZ Reset (disconnect, enter command mode and restore the
flash settings)
15 AT&C Serial port DCD control
AT&C0=DCD always on
AT&C1=DTE detects connection by DCD on/off
(default)
16 AT&F Restore manufacturer’s settings
17 AT&G Select guard time reply “OK” only
18 AT&R Serial port RTS option command reply “OK” only
19 AT&S Serial port DSR control reply “OK” only
20 AT&V View settings
21 AT&W Write current settings to flash for next boot up
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