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PCS100 UPS-I
User Manual
12.3.5
Modbus TCP Error Codes
The following error codes may be returned by the Modbus TCP server.
Code Name
Description
1
Illegal Function
Function code received in the query is not supported by this MODBUS server
or the query is badly formatted.
2
Illegal Data Address The data address received in the query is not a valid address in the MODBUS
server. Specifically, the combination of address and number of registers is
not valid.
Register not known by the PCS100 UPS-I
Register is not in MODBUS config table
Not all registers of a single parameter accessed
Register / length mismatch
3
Illegal Data Value
The value received in the query is not an allowable value for this register or
the implied length is invalid.
Value out of range for parameter
Number of registers requested exceeds max.
4
Slave Device Failure An unrecoverable error occurred while server attempted to perform
requested action.
Read/Write access violation
GDM hardware issues
Insufficient access privileges
6
Slave device Busy
The MODBUS server is unable to process this command at present. Retry this
command again later.
GDM VCAN server is busy, unavailable or has returned an error
GDM VCAN cable has been unplugged from the GDM
Table 12
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4: PCS100 UPS
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I Modbus TCP error codes
Summary of Contents for PCS100 UPS-I
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