User`s manual

121
CHAPTER 3 COMMUNICATIONS BY THE MODEM FUNCTION
3
3.3 Specifications
(6) Initial Settings
The connection data used for modem functions can be registered as follows using setting procedures.
Set the telephone number and message within the permissible number of registration characters for modem/TA.
• If registered using GX Configurator-SC
• Comments can be set to a maximum of 254 bytes. (These are not used for control.)
• Telephone numbers can be set to a maximum of 62 bytes.
• Messages can be set to a maximum of 254 bytes.
• If registered from the programmable controller CPU (sequence program)
• Comments cannot be set.
• Telephone numbers can be set to a maximum of 18 bytes.
• Messages can be set to a maximum of 30 bytes.
(7) Programmable controller CPU monitoring function
See Page 67, Section 2.4 for precautions when transmitting monitoring results using the modem function.
(8) Remote password check
(a) How to unlock the remote password
• When the Q series C24 has been set as a module subject to the remote password check with the QCPU
parameter, a remote password unlock processing must be performed from the external device after line
connection before starting data communication.
• The unlock processing for the QCPU remote password is performed as follows:
• When communicating using MC protocol
Perform the unlock processing from the external device using dedicated commands.
• When accessing the programmable controller from GX Developer
Perform the unlock processing on the GX Developer screen when access begins.
(b) When the remote password unlock processing is completed abnormally
• Repeat the unlock processing after checking the remote password set in the QCPU.
• Start with the line connect processing again if the Q series C24 line connect signal (X12) turns OFF due to
the unlock processing abnormal completion.
• The user should clear the accumulated count stored in the following buffer memory before repeating the line
connect processing if the Q series C24 CHn side ERR occurrence signal (XE/XF) turns ON and the ERR
LED lights up due to the unlock processing abnormal completion.
(Applicable buffer memory)
Storage area for accumulated count of unlock process abnormal completion accumulated: Address 8756
(22FCH)
(How to clear) Cleared by the user using one of the following:
• Set the accumulated count to "0" using the GX Configurator-SC modem function monitor/test screen.
• Write "0" to the applicable area of the buffer memory.