Remote Password Check Procedure - Mitsubishi Electric QJ71E71-100 User Manual

14.4.3

Remote password check procedure

This section describes the procedure of the remote password check performed by the E71.
(1) Communications in which an entered remote password is checked
• When the following parameters have been set for the E71 mounted on the QCPU station, the E71 checks a
remote password for communication requests listed below.
• When a remote password has been set in the CPU module
• When the connection where the E71 communicates with a connected device has been set as the
target for the remote password check
• The E71 checks an entered remote password for a communication request addressed to the own
station/another station received from a connected device.
• The E71 performs a send process upon the following send requests without checking an entered remote
password.
• Send request from the CPU module on the own station (such as communications using a fixed
buffer)
• Communication request from the connected device (including the programming tool connected to
the CPU module on the own station) to send data to another station upon request from the CPU
module
3)
Programming tool
*1 A communication request from the connected device cannot be accepted because a remote password check has been
set. If the remote password check has not been set, the communication request is accepted, and the E71 can
communicate with the connected devices.
(2) Selecting a connection for which the remote password check is performed
A connection for which an entered remote password is checked can be selected using a parameter. (
209, Section 14.4.6)
202
QCPU
Remote password
Remote password
check
(Own station)
(Another station)
Programming tool
E71
2)
3)
QCPU
Remote Remote password
password
E71
Path checked using
a remote password
Path not checked using
a remote password
check
(*1)
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