Mitsubishi Electric MELSEC iQ-R Series User Manual page 178

Precautions
• When setting the no-communication interval time to 'Infinite wait' (setting value = 0), be sure to perform line disconnection
processing after the data has been communicated.
• Leaving the line connected for long periods of time without performing line disconnection after data communication has
been completed not only will run up a large telephone bill but also may violate electronic communication business laws.
■Transmissions using the modem function
All communications using the modem function are performed in full-duplex communications. Leave the following initial
settings for the interface side that uses the modem function as default.
• CD terminal check : Do not check
• Communication method: Full-duplex communications
■Processing that corresponds to output signals
The processing to the following output signals cannot be aborted.
Output signal
Y10
Y11
Y12
Using the following initial settings for the modem function as default is recommended. (When any error occurred, it will end
due to the time-out.)
• Connection re-try count: 3 times
• Connection retry intervals : 180 s
• Initialization/connection timeout : 60 s
Also configure the settings for a remote password check when the remote password check is executed to the remote
password set in the module CPU. (Page 165 Details of buffer memory (for the remote password function))
7 COMMUNICATIONS BY THE MODEM FUNCTION
176
7.4 Startup of the Modem Function
Request processing name
Initialization request (standby request)
Connection request
Modem disconnection request