User`s manual

75
CHAPTER 3 COMMUNICATIONS BY THE MODEM FUNCTION
3
3.1 Overview
3.1.3 Comparisons with related devices
The following lists the comparison with the related products which supports data communication with the
programmable controller using the modem and public line, etc., similarly to the communication performed via the
modem function.
: enable, : disable
*1 Modem initialization is executed automatically when the Q Series C24 starts up.
*2 Prior to data communication, the Q series C24 checks whether the remote password specified by the user and the
remote password set in the QCPU agree or not. If they agree, it allows access to the specified station.
Communication function name
QJ71C24N(-R2/R4),
QJ71C24(-R2) (function
version)
QC24N (modem
function)
Q6TEL (for
QnACPU/ACPU)
A6TEL (for
ACPU)
B A
Modem/TA initialization
Sequence program  
GX Configurator-SC

*1
 
Line connection (dialing) (Performed on the external device side)
Communication between
same products (such as
C24-C24)
MC protocol  
Nonprocedural protocol  
Bidirectional protocol  
Communication between Q series C24 and other products 
Remote communication from GX Developer 
Remote communication from GX Developer (Callback
function)
   
Remote communication from peripheral device for GPPQ 
Remote communication from peripheral device for GPPA 
Notification Pager receiver 
Remote password check

*2
  
Line disconnection (Performed on the external device side)
Data setting (data for
modem initialization, data
for connection)
Sequence program 
GX Developer 
GPPQ 
GPPA 
GX Configurator-SC 
Number of connectable modems/TAs 1
Transmission type Pulse/tone
Connectable lines
Analog 2-line method 
Analog 4-line method 
Digital line (ISDN) 