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MELSEC-Q
7 ONLINE MODULE CHANGE
(f) Enable conversion using D/A conversion enable/disable setting (buffer
memory address 0: Un\G0). Set digital values to Digital value (buffer
memory address 1 to 8: Un\G1 to 8) and turn Operating condition setting
request (Y9) from off to on.
Turn on Output enable/disable flag (Y1 and Y2) of the channel to used to
check whether proper conversion has been made or not.
(Be careful since analog outputs are provided actually.)
(g) Since the new module is in a default status, it must be initialized by a
sequence program after control resumption.
Before performing initialization, check whether the contents of the
initialization program are correct or not.
1) Normal system configuration
The sequence program should perform initialization on the leading
edge of Module ready (X0) of the D/A converter module.
When control resumption is executed, Module ready (X0) turns on and
initialization is performed. (If the sequence program performs
initialization only one scan after RUN, initialization is not performed.)
2) When used on remote I/O network
Insert a user device that will execute initialization at any timing
(initialization request signal) into the sequence program. After control
resumption, turn on the initialization request signal to perform
initialization. (If the sequence program performs initialization only one
scan after a data link start of the remote I/O network, initialization is not
performed.)
(5) Resumption of control
(a) After choosing [Diagnosis] - [Online module change] on GX Developer to
display the "Online module change" dialog box again, click the [Execution]
button to resume control. Module ready (X0) turns on.
(b) The "Online module change completed" dialog box appears.
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