Mitsubishi Q12PRHCPU - Appendix 6.6 ONDEMAND Instruction

APPENDICES
Appendix 6 Precautions for Using Serial Communication Module
Appendix 6.6 ONDEMAND Instruction
App - 46
9
PROCESSING TIME FOR REDUNDANT SYSTEMS
APPENDICESINDEX
Appendix 6.6 ONDEMAND Instruction
The following shows the device and buffer memory used in the sample program of sending
data by the on-demand function.
(1) Device of programmable controller CPU
(2) I/O signal
(3) Buffer memory
Table.App 33 Device Used in the Program
Device No. Application Remarks
X50 Transmission command ON: Transmission completion
X60 Error reset command ON: Error reset
Y20 For checking normal completion ON: Normal completion
Y21 For checking abnormal completion ON: Abnormal completion
M0 Transmission data set ON: Transmission data set
M1 On-demand data set ON: On-demand data set
Table.App 34 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 35 List of Buffer Memory
Buffer memory address Hexadecimal
(decimal )
Name Stored value
CH1 side CH2 side
0
H
(0) 1
H
(1)
Communication error clear
request and to turn LED off
0: OFF, No initialization request
1: OFF, Initialization requested
96
H
(150) 136
H
(310)
Word/byte units designation
0: Word units
1: Byte units
A0
H
(160) 140
H
(320)
Buffer memory head
address for on-demand
400
H
to 1AFF
H
2600
H
to 3FFF
H
A1
H
(161) 141
H
(321)
On-demand data length
0000
H
to 3400
H
201
H
(513)
LED ON status and
communication error status
0: Turned off/OFF, no error
1: Turned on/ON, error
256
H
(598) 266
H
(614)
On-demand execution result
0: Completed normally
1 or later: Error code
C00
H
to 1AFF
H
(3072 to 6911)
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