Mitsubishi MELSEC-Q series User Manual page 161

7
ONLINE MODULE CHANGE
(5) Resumption of control
7.3.6 When user range setting is used and initial setting was made with sequence program (other system is
(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 (X9) of the Q66DA-G.
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.)
(a) After choosing [Diagnosis] - [Online module change] on GX Developer to
redisplay the "Online module change" screen, click the [Execution] button to
resume control. The FROM/TO instruction for the module resumes.
(b) The "Online module change completed" screen appears.
7.3 Online Module Change Procedure
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