Hitachi HIDIC MICRO-EH Applications Manual page 259

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