Mitsubishi Electric MELSEC iQ-R Series User Manual page 272

Directory request from host
When a current EPPD request message (S7F19) was received from the host, the SECS/GEM communication software
creates a current EPPD data message (S7F20) from the current directory information content, and then sends it to the host
automatically.
Directory deletion request from host
Configure the handshake to delete the process program of the PPID specified by the host at the [Change notification] tab of
the "Process Program Settings" screen. ( Page 204 Change notification)
Select the "Enable S7F17 Scenario" checkbox, and then configure the notification destination trigger and storage register.
■Handshake methods
When a process program deletion instruction message (S7F17) has been received from the host, the SECS/GEM
communication software configures [Deletion instruction] for the directory information of the corresponding process program,
and then switches ON the Process Program Deletion Notification.
When this relay is ON, the programmable controller CPU deletes the process program it was instructed to delete. The result of
the deletion is set to the register to save process program deletion results. Next, the process program deletion notification
trigger is switched OFF, and the process program deletion completion notification trigger is switched ON.
The SECS/GEM communication software receives that the process program deletion completion notification is ON, sends a
process program deletion confirmation message (S7F18) message to the host, and then switches OFF the process program
deletion completion notification.
Notification of process program change from the equipment
Configure the notification to the host that the process program was changed at the equipment at the screen of the [Change
Notification] tab of the "Process Program Settings" screen. ( Page 204 Change notification)
Specify the notification destination using "Process Program Change".
■Handshake methods
When the process program has been changed at the equipment, the change status is configured for [Change Status] of the
corresponding directory information, and the process program change trigger relay is switched ON.
The SECS/GEM communication software sends a process program change notification (S6F11) to the host, and then
switches OFF the process program change trigger relay.
Notification of process program selection at the equipment
Configure the notification to the host that the process program was selected at the equipment at the screen of the [Change
Notification] tab of the "Process Program Settings" screen. ( Page 204 Change notification)
Specify the notification destination using "Process Program Select".
■Handshake methods
When a process program has been selected at the equipment, the selection status is set for [Selection State] of the
corresponding directory information, and the process program select trigger relay is switched ON.
The SECS/GEM communication software sends the selection of a process program (S6F11) to the host, and then switches
OFF the process program select trigger relay.
When the automatic process program processing function of the SECS/GEM communication software is not
used, select the [Exclusion] tab of the "Process program settings" screen, and then clear the [On] checkbox of
each scenario.
9 SECS/GEM COMMUNICATION SOFTWARE KNOWLEDGE
270
9.17 Using the Process Program