Schneider Electric 890USE17700 manual Modbus Error Codes

Data Exchange

Modbus Error Codes

Introduction	During operations, you may encounter Modbus error codes that are returned by the
	STB NIP 2212 NIM to the Advantys configuration software. These error codes are
	displayed as byte codes in hexadecimal format.
	Note: Because the STB NIP 2212 NIM supports Modbus over a serial interface,
	the Ethernet-based Modbus server does not support Modbus requests with a unit
	ID of 255 (0xFF). In the PL7 programming tool, the default value for the field unit
	ID when adding an I/O scanner connection is 255 (0xFF). Be aware that the NIM
	drops packets with this unit ID.
General Error
Codes
	Error Code	Error Type	Description
	0x01	Illegal function	This error code is returned when the Advantys
			configuration software attempts to modify the
			configuration of the STB NIP 2212 when the software
			does not have control.
	0x03	Illegal Modbus	This error code may indicate any of the following
		data value	conditions:
			the function code contains incorrect data
			a request is being issued while the NIM is in the
			wrong operating mode—for example, COMM state
			￿protected
			you have entered the wrong password

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