YASKAWA OYMC V1000

YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 291
2.11 Communication Errors
MEMOBUS/Modbus Communications
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2.11 Communication Errors
◆ MEMOBUS/Modbus Error Codes
A list of MEMOBUS/Modbus errors appears below.
When an error occurs, remove whatever caused the error and restart communications.
◆ Slave Not Responding
In the following situations, the slave drive will ignore the command message sent from the
master, and not send a response message:
• When a communications error (overrun, framing, parity or CRC-16) is detected in the
command message.
Error Code
Error Name
Cause
01H
Function Code Error
• Attempted to set a function code from a PLC other than 03H, 08H, and 10H.
02H
Register Number Error
• A register number specified in the command message does not exist.
• Attempted to send a broadcast message using other register numbers than 0001H or 0002H.
03H
Bit Count Error
• Read data or write data is greater than 16 bits.Invalid command message quantity.
• In a write message, the “Number of Data Items” contained within the message does not equal
twice the amount of data words (i.e., the total of Data 1+ Data 2, etc.).
21H
Data Setting Error
• Control data or parameter write data is outside the allowable setting range.
• Attempted to write a contradictory parameter setting.
22H
Write Mode Error
• Attempted to write while the drive was operating to a parameter that cannot be written to during
run.
• During an EEPROM data error (CPF06), the master attempted to write to a parameter other than
A1-00 to -05, E1-03, or o2-04.
• Attempted to write to read-only data.
23H
DC Bus Undervoltage Write Error
• Attempted to write from the master during an undervoltage fault (Uv1).
• Attempted to execute and Enter command during Uv1.
24H
Write Error During Parameter Process
• Master attempted writing to the drive while the drive was processing parameter data.