APPENDICES
Appendix 6 Precautions for Using Serial Communication Module
Appendix 6.2 UINI Instruction
App - 38
9
PROCESSING TIME
FOR REDUNDANT
SYSTEMS
APPENDICESINDEX
Appendix 6.2 UINI Instruction
The following shows the device and buffer memory used in the sample program for mode
switching.
(1) Device of programmable controller CPU
(2) I/O signal
(3) Buffer memory
When all of the receive processing, send processing, and receive data clear
processing are not executed, write 1 to the following address.
Table.App 21 Device Used in the Program
Device No. Application Remarks
X52 Mode switching request clear command ON: Mode switching request clear
X60 Mode switching command ON: Mode switching
M11 Receive processing ON: Executing, OFF: Not executed
M12 Send processing ON: Executing, OFF: Not executed
M50 Mode switching completion flag ON: Mode switching completion
Table.App 22 List of I/O Signal
I/O signal
Signal name
Device to be
turned ON/OFF
Timing
CH1 side CH2 side CPU C24
Xn6 XnD Mode switching -
Yn2 Yn9
Mode switching
request
-
Table.App 23 List of I/O Signal
I/O signal
Signal name Description
CH1 side CH2 side
Xn3 XnA Reception data read request ON: Requesting read
Xn4 XnB Reception abnormal detection ON: Abnormal detection
XnE CH1 ERR. occurrence ON: Error occurring
XnF CH2 ERR. occurrence ON: Error occurring
X(n+1)E Q series C24 ready ON: Accessible
X(n+1)F
Watchdog timer error
(WDT error)
ON : Module error occurred
OFF: Module being normally operated
Table.App 24 List of Buffer Memory
Buffer memory
address Hexadecimal
(decimal)
Name Setting value Stored value
CH1 side CH2 side
90
H
(144)
130
H
(304)
For mode switching
specification
Switching mode
No. specification
(Refer to (a))
• 0001
H
: MC protocol (Format 1)
• 0007
H
: Bidirectional protocol
• 00FF
H
: GX Developer connection
91
H
(145)
131
H
(305)
Transmission
specification after
switching (Refer to
(b))
• 0000
H
: Set the same setting as the
setting of GX Developer
• 8000
H
to 8FFF
H
: Set the setting
the same as this area setting
203
H
(515)
For switching setting
and mode switching
confirmation
Switch setting error,
mode switching
error status
• 0: No error
• Other than 0: Switch setting error,
mode switching error
(Switching in execution)
Completed
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