7 - 34                                                                                    7 - 34 
MELSEC-Q
7   ONLINE MODULE CHANGE 
 
(f)  Set the channel for use to conversion enable in A/D conversion 
enable/disable setting (buffer memory address 0: Un\G0), and then turn on 
and off Operating condition setting request (Y9). Monitor the digital output 
values (buffer memory addresses 11 to 14, 54 to 62, Un\G11 to Un\G14, 
Un\G54 to Un\G62) to check whether proper conversion has been made or 
not. 
 
(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 A/D 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 
redisplay the "Online module change" screen, click the [Execution] button to 
resume control. Module READY (X0) turns on. 
 
 
 
(b)  The "Online module change completed" screen appears.