Hitachi EH-150 Series - Page 70

Chapter6 Communication Mode
6 - 28
Fre
e Protocol
Table 6.7 Free protocol mode abnormalities detected at time of communication
No.
Error
code
Item
Error
level
Details
1
H8A
Parity error
Warning
Parity error in receiving data.
2
H8B
Framing error
Warning
Framing error in receiving data.
3
H8C
Overrun error
Warning
Overrun error in receiving data.
4
H8D
Check code error
Warning
Check code error in receiving data.
5
H8E
Receiving timeout error
Warning
Receiving of data was not completed within the time specified by
EH-SIO.
6
H8F
Sending timeout error
Warning
EH-SIO did not complete transmission of data by within the time
interval.
(Monitoring time is fixed by the system. It cannot be changed.)
7
H91
Inaccurate data content
of message
Warning
A message containing inaccurate data was transmitted and received.
(Example: The wording is correct as a telegram message, but the
contents of the data are abnormal ASCII data.)
« Note »
EH-SIO monitors every byte for parity error, framing error, etc. Therefore, if communication setting as the
transmission format configuration and transmission speed are wrong, EH-SIO may detect two or more packets as
the error information even if the data is only one packet.