APPENDICES
Appendix 6 Precautions for Using Serial Communication Module
Appendix 6.9 BIDOUT Instruction
App
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Appendix 6.9 BIDOUT Instruction
The following shows the device and buffer memory used in the sample program of sending
data by the bidirectional protocol communication.
(1) Device of programmable controller CPU
(2) I/O signal
(3) Buffer memory
Table.App 42 Device Used in the Program
Device No.
Application
Remarks
X50
Transmission command
ON: Transmission completion
X60
Clear command
ON: Clear completion
Table.App 43 List of I/O Signal
I/O signal
Signal name
Description
CH1 side
CH2 side
Xn0
Xn7
Transmission normal
completion
ON: Normal completion
Xn1
Xn8
Transmission abnormal
completion
ON: Abnormal completion
Xn2
Xn9
Transmission processing
Transmission in progress
XnE
XnF
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
Yn0
Yn7
Transmission request
ON: Requesting transmission
Table.App 44 List of Buffer Memory
Buffer memory address Hexadecimal
(decimal)
Name
Stored value
CH1 side
CH2 side
257
H
(599)
267
H
(615)
Data transmission result
0 : Normal completion
1 or more: Abnormal completion
(error code)
400
H
(1024)
800
H
(2048)
Transmission data count
designation
0: No designation
1 or more: Number of send data
401
H
to
5FF
H
(1025 to 1535)
801
H
to
9FF
H
(2049 to 2559)
Transmission data
designation
Data to be sent to an external
device
