455
APPENDICES
A
Appendix 1 Parameters
Appendix 1.2 PLC parameters
Appendix 1.2.12 Serial communication
The transmission speed, sum check, transmission wait time, and RUN write setting for using the serial
communication function of the CPU module are set.Note Appx.4
Note Appx.4
Before using the serial communication function with the Q02UCPU, Q03UDCPU, Q04UDHCPU, Q06UDHCPU,
Q10UDHCPU, Q13UDHCPU, Q20UDHCPU, or Q26UDHCPU, check the versions of the CPU module and programming
tool used. ( Page 465, Appendix 2)
The Built-in Ethernet port QCPU does not support the serial communication function.
Item
Parameter
No.
Description Setting range Default Reference
Use Serial Communication
100E
H
Select the item when using the
serial communication function.
Selected/deselected Deselected
Page 232,
Section 3.23
Transmission Speed
Set a transmission speed for data
communication with the external
device.
9.6Kbps, 19.2Kbps,
38.4Kbps, 57.6Kbps,
115.2Kbps
19.2Kbps
Sum Check
Set whether to add a sum check
code to a message sent or
received when using the serial
communication function,
according to the specifications of
the external device.
Selected/deselected Selected
Transmission Wait Time
Set a period of waiting time on the
CPU module side in case the
CPU module cannot receive data
immediately after the external
device sends data.
No wait time/10ms to 150ms
(in increments of 10ms)
No wait time
Online Change
Enable or disable writing of data
from the external device to the
running CPU module.
Selected/deselected Deselected
Universal
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