Chapter 8 Appendix
・
Status flags
Notifies the communication status and the communication result of the ERX command.
Receiving Turns ON from the time the ERX command request is received until a response is received
from the slave device or until an error is detected.
Success
Turns ON when a normal response is received from the slave device during communication.
Error
Turn ON if any error is detected. *1*2
Note: *1: Major causes of abnormalities include the following.
・
Reading the memory address of the slave device is not supported.
・
The data size of the slave device is not supported for reading.
・
The function code of the slave device is not supported for reading.
・
Problems with the communication path such as disconnection of the LAN cable.
・
The network portion of the IP address of the slave device and the master device does not match.
・
The power of the slave device, HAB, or other communication device is not turned on.
*2:
When creating a ladder program with the contact points of success/error contact rise/fall,
be sure to precede this command. If it is described after this command, it may not be detectable (if the execution
condition of the ERX/EWX command does not use the successful/error contact).
Detectable
Undetectable
Receiving
Success
Error
When not using Success/Error contact as the
execution condition of ERX/EWX command
Summary of Contents for Kostac SJ-Ether Series
Page 1: ...English version of the KOSTAC SJ Ether series user s manual SJ ETHER USER M...
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Page 113: ...3 24 Note Refer to 6 3 3 Module Assembly for connections and locks between modules...
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Page 156: ...flashing OFF Not sent H W RX Green flashing Receiving H W OFF Not received H W...
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Page 310: ...Chapter 7 Maintenance...
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