Eaton EASY-E4 Series User Manual

11. Connection to other devices
11.4 Modbus TCP
Fault Code 1 byte 0x83 ; Read Holding Registers
Exception Code 1 byte 02 or 03 or 04
Exception Code 02 = Starting address is invalid, i.e.:
l 0 (the user keeps specifying addresses as one-based addresses)
l Undefined* (please refer to the "Modbus map" table) or
l Un-enabled*
Exception Code 03 = The number of inputs is not >= 0x0001 and <= 0x07D0
Exception Code 04 = (Error in server) n.a.**
If no analog I/O is physically present (e.g., analog I/O smart modules missing or faulty),
the image table (values = 0) will still be delivered to the client. No check, no error mes-
sage.
*For an error message, it is sufficient if only one of the requested addresses is not
unlocked or is invalid.
**A read operation always returns consistent data from the image table, since this data
is protected from other modules by semaphores. In other words, as of this writing,
there is no known criterion for a "read holding registers" error in the server.
Read Input Registers 0x04:
In the event of an error, Modbus TCP will send an error frame.
Fault Code 1 byte 0x84 ; Read Input Registers
Exception Code 1 byte 02 or 03 or 04
Exception Code 02 = Starting address is invalid, i.e.:
l 0 (the user keeps specifying addresses as one-based addresses)
l Undefined* (please refer to the "Modbus map" table) or
l Un-enabled*
Exception Code 03 = The number of inputs is not >= 0x0001 and <= 0x07D0
Exception Code 04 = (Error in server) n.a.**
If no analog I/O is physically present (e.g., analog I/O smart modules missing or faulty),
the image table (values = 0) will still be delivered to the client. No check, no error mes-
sage.
*For an error message, it is sufficient if only one of the requested addresses is not
unlocked or is invalid.
**A read operation always returns consistent data from the image table, since this data
is protected from other modules by semaphores. In other words, as of this writing,
there is no known criterion for a "read input registers" error in the server.
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easyE4 11/18 MN050009 EN www.eaton.com

Eaton EASY-E4 Series Specifications

General

Type	Programmable Relay
Digital Inputs	Up to 12
Digital Outputs	Up to 8
Display	LCD
Operating Temperature	-25°C to +55°C
Protection Degree	IP20
Storage Temperature	-40°C to +70°C
Supply Voltage	24 V DC, 100-240 V AC
Analog Inputs	4
Outputs	Relay, transistor
Programming	EASY-SOFT-PRO
Communication	Ethernet, Modbus, CANopen
Expansion	Expandable with additional modules
Relative Humidity	5% to 95% (non-condensing)
Standards	IEC/EN 61131-2, UL 508, CSA C22.2 No. 142