Hayes Modem AT Command Protocol

Appendix N

 

 

 

Password Verification Operation

The number of retries is 3 for password verification.

PC

Password verification

(starting #552)

Dispatching

character string

(Retry up to 3 times)

Receiving password

Verifying

password

Verification

result

Terminating

process

Personal computer (remote exchange)

“Password: ”

Receiving character

string

Password

Issuing password

 

When Instruction Execution Flag (SR 28908 or SR 28913) turns ON.

Data Send/Receive

Data Send/Receive can be executed using sequence No. 553. The send data sent to another exchange is set in the words specified by the second operand of PMCR. Data received by the PC is stored in the words specified by the third operand of PMCR.

Operand and Word Settings of PMCR

Operand 1

#x553 (x: Communications port)

 

 

Operand 2

First address C1 of the words where send data is set

 

 

Operand 3

First address C2 of the words where receive data is stored

Operand 2

C1+0

Number of words from address set for operand 2 to end of

4 digits BCD

 

data

 

 

 

 

C1+1

Number of bytes of send data

4 digits BCD

 

 

 

C1+2

Send data (dialling operation)

ASCII

:

(Fill data to left for odd numbers of bytes)

 

C1+n

 

 

 

 

 

Operand 3

 

 

 

 

C2+0

Number of bytes of receive data

4 digits BCD

 

 

 

C2+1

Receive data (dialling operation)

ASCII

:

(Fill data to left for odd numbers of bytes)

 

C2+n

 

 

 

 

 

408

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Omron CQM1H-SCB41 operation manual Data Send/Receive, Password Verification Operation, Operand