Mitsubishi Electric GOT2000 Series User Manual page 422

3) Communication error status
Communication error status of each port is displayed on this screen.
The following table describes the communication status that each display item shows.
Display item
NO ERROR
ERR Ovr.
ERR Frm.
ERR Prt.
ERR Text
TIME OUT
ERR Line
ERR Cmd.
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11.4 Communication Monitor
Status
No error Communication is executed normally.
The receive data is sent continuously with a short interval.
Overrun error Let the baud rate (communication speed) be equivalent between the GOT and
counterpart equipment.
The communication frames of GOT and PLC are inconsistent.
Framing error Confirm the communication settings of GOT and PLC, such as data length, stop
bit and baud rate.
The parity check conditions of GOT and PLC are inconsistent.
Parity error
Let the parity check condition (odd or even) of GOT and PLC be consistent.
The sum data is inconsistent. Or the contents of the receive data are not
consistent with the send command from the GOT.
Text error Let the communication settings and contents of data be consistent between the
GOT and counterpart equipment. (If NAK is received while the GOT is
connected to the microcomputer board, a text error occurs.)
Though receiving is started, receive data is not sent.
Check the wiring between the GOT and its communication target.
Communication timeout
(When the GOT is connected to the microcomputer board, confirm the
terminator, CR, wiring, etc.)
The control line is not operating correctly.
Control line error
Confirm the wiring of the control line.
A command contained in the receive data is not consistent with the send
Command error
command from the GOT.
Action