Hitachi NJI-350B User Manual
Page 259
Chapter 11 Communication Specifications
11-6
(2)
List of commands (extract)
1]
AT commands
Command
Function overview
Example
AT
Automatically recognizes data format
A/
Re-executes the response directly preceding
ATA
Forced reception
ATDmm
Dial
ATD12345678
ATEn
Command echo (echo back a text string entered to modem)
0: No
1: Yes
ATE0
ATHn
Line ON/OFF
0: On hook (disconnect)
1: Off hook
ATH0
ATH1
ATPn
Pulse (dial) setting
0, 1: 10 pps
2 : 20 pps
ATP0, ATP1
ATP2
ATQn
Result code setting 0: Yes 1: No
ATQ0
ATT
Tone (push) setting
ATT
ATSn = X
Sets S register value.
ATS0 = 0
ATVn
Result code display format
0: Number
1: Word
ATV0
ATV1
AT&Cn
CD signal control
0: Always on
1: Depends on the carrier of counter-party modem
AT&C0
AT&C1
AT&Dn
ER signal control
0: Always on
2: Turning from on to off during communication disconnects line
3: Turning from on to off resets the software
AT&D0
AT&D2
AT&D3
AT&Sn
DR signal
0: Always on
1: Depends on sequence
2: Depends on CD signal
AT&S0
AT&S1
AT&S2
AT&Rn
RI(CI) signal control
0: Turns on from calling start until communication begins
1: Turns on from calling start until communication ends
2: Turns on/off in synchronization with the call signal
AT&R0
AT&R1
AT&R2
2]
S register
S register
Set value
Function
S0
0 no automatic
reception
1 to 255
Setting for automatic reception/reception ring count
S2
0 to 127
(43 [+] )
Escape code setting
S3
0 to 127
(13 [CR] )
CR code setting
S4
0 to 127
(10 [LF] )
LF code setting
3]
Result codes
Number format
Word format
Meaning
0
OK
Normal execution
1
CONNECT
Connection complete
2
RING
Reception detected
3
NO CARRIER
Line disconnected
4
ERROR
Command error
5
CONNECT 1200
1200 bps connection
6
NO DIAL TONE
Cannot hear dial tone
7
BUSY
Busy signal detected
8
NO ANSWER
No tone heard
10
CONNECT 2400
2400 bps connection
11
CONNECT 4800
4800 bps connection
12
CONNECT 9600
9600 bps connection
13
CONNECT 14400
14400 bps connection