Error Response Message Format - Emerson Liebert HiPulse E Series Communications Manual

UPS System: HIPULSE E
Description of Protocol
5.14

ERROR RESPONSE MESSAGE FORMAT

Message
SLAVE
FCT
ERR
CRC
Note 1:
Error Code 01
Error Code 02
Error Code 03
Error Code 04
Error code 1 signifies that the requested function is not supported.
Error code 2 specified above is sent in response to a request for inexistent parameters with an address out of range
(address error). By definition MODBUS will not permit "holes" in parameter addresses. In response to a request for
inexistent parameters or parameters with an address which falls between existing parameter addresses the value
0xFFFFH will be sent.
Error code 3 signifies that there were errors in the request and that it cannot be performed.
Error code 4 may signify the following statuses:
CAN bus busy
•
Unit BLOCKED because operator is accessing Operator Panel
•
CAN bus error/no response.
•
Page 5-20
Meaning
Panel board address
Function Code
Error Code
Checksum
= unknown function code
= address error
= data error
= bus error/busy
Size (Bytes) Values
1 0x01 - 0xF7
1 FCT or 0x80
1 Note 1
2
(04/07)
Communication System Manual
(Modbus/Jbus Interface)
Format
HEX
HEX
HEX
HEX