Modbus Map - Eaton easyE4 series Manual

11.4.4 Modbus map

Table 105: How the Modbus registers and read data for the Modbus server are mapped easyE4 control relays
Function code Modbus
Modbus reg. #
0x01 1
(Read Coil)
...
Max. 512 coils at
4
once,
8 coils are
17
grouped into a
byte
...
128
1001
...
1512
2001
...
2512
0x03 1
(Read Holding
...
Register)
4
Max. 125 registers
at once,
5
1 register =
2 byte/1word
...
148
1001
...
1512
2001
...
2032
5000
....
5005
easyE4 11/18 MN050009 EN www.eaton.com
11. Connection to other devices
Operand Description
Q1 Bit output 1
... ...
Q4 Bit output 4
Q17 Expansion
Bit output
... ...
Q128 Expansion
Bit output
M1 Marker bit 1
... ...
M512 Marker bit 512
N1 NET marker bit 1
... ...
N512 loc. NET marker bit 512
QA1 16-bit analog output 1
... ...
QA4 16-bit analog output 4
QA5 Expansion 16-bit analog
output
... ...
QA48 Expansion 16-bit analog
output
MW1 Marker word 1
... ...
MW512 Marker word 512
NW1 loc. Net marker word 1
... ...
NW32 NET marker word 32
RTC (second)
... ...
RTC (year)
11.4 Modbus TCP
Remark
Local outputs base device
Local outputs expansion
Only the local NET marker bits
are returned
Local analog outputs base
device
Local analog outputs expansion
Only local NET marker words
will be returned, i.e., no double
words, no bytes, and no mark-
ers from the other stations will
be returned
5000: Seconds; 5001: Minutes;
5002: Hours; 5003: Day; 5004:
Month; 5005: Year
557