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Appendix NHayes Modem AT Command Protocol
407
Setting Example
If telephone number is 03-0123-4567
Character string length of dialling operation sent to modem (bytes)
Code length of PMCR when it is used (words)
00160010 4154
A T
4454
D T
3033
0 3
2D30
– 0
3132
1 2
332D
3 –
3435
4 5
3637
6 7
Note 1. This example uses a tone line. Change ATDT to ATDP for pulse lines.
2. Fill the telephone number to the left in the words if the character string length of the dialling operation is
an odd number of bytes.
Code length of PMCR when it is used (words)
Character string length of dialling operation sent to modem (bytes)
00110008 4154
A T
4454
D T
3031
0 1
2D32
– 2
3334
3 4
3500
5 j
Password Verification
A password can be verified by executing sequence No. 552 of this protocol. It is required to set in advance the
value of the password in the words specified by the second operand of PMCR.
Operand and Word Settings of PMCR
Operand 1 #x550 (x: Communications port)
Operand 2 First address of the words where the password is set
Operand 3 None
C+0 Number of words from address set for operand 2 to end of
data
4 digits BCD
C+1 Number of bytes of comparison data (normal value of
password)
4 digits BCD
C+2
:
C+n
Comparison value (password normal value)
(Fill data to left for odd numbers of bytes)
ASCII
Setting Example
When password is OMRON-CO.
Code length of PMCR when it is used (words)
Character string length of password sent to modem (bytes)
00080006 4F4D
O M
524F
R O
4E2D
N –
434F
C O