Mode Switching Method By Program - Mitsubishi Electric MELSEC iQ-R Series User Manual

19.4

Mode Switching Method by Program

This section shows how to switch the C24 mode by program.
Mode switching procedure
The procedures for switching C24 mode by program are as shown below.
Mode switching request
Mode switching in progress
Module READY
Mode switching area
(Un\G144 to 145/304 to 305)
Parameter setting error, mode switching
error storage area (Un\G515)
Buffer memory special applications area
Data communications initialization setting area
Un\G147 to 292/307 to 452
*1 Inform in advance all the connected device that data communications cannot be performed due to mode switching.
*2 When an error occurs after checking 'Parameter setting error, mode switching error status' (Un\G515), take the corresponding actions.
(Page 473 Error Code List)
 Checking of mode switching designation contents for buffer memory mode switching area and writing of mode switching designation
contents within the range that can be designated
 Re-execution of mode switching
*3 After confirming that mode switching was completed normally, inform all the connected devices that data communications are possible,
and restart data communications.
To check C24 mode (communication protocol, transmission specifications) after mode switching, read the buffer memory (Un\G594 to
595/610 to 611). (Page 447 Current operation status reading method)
Y2/Y9
X6/XD
X1E
TO
Data
communications
possible
*1
*2
FROM
(Only when normal)
TO
Default value change
(Performed only when necessary)
Data communications impossible
19 SWITCHING THE MODE AFTER STARTING
19.4 Mode Switching Method by Program
*3
Data communications possible
19
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