Lenze I/O system 1000 System Manual - Manual (Page 718)

Modbus TCP Kommunikation
Access to the I/O system 1000
Access to I/O area
13
l
718 EDSIO1000 EN 7.0
13.2.1 Access to I/O area
Word =
Register
IN: "Input Register"
OUT: "Holding Register"
Bit =
Coil
IN: "Input Status"
OUT: "Coil Status"
Conventions:
ƒ Modbus distinguishes between bit access and word access; bits = "coils" and words
= "register".
ƒ Bit inputs are called "input status" and bit outputs are called "coil status".
ƒ Word inputs are called "input register" and word outputs are called "holding
register"
Range definition
Usually, the access under Modbus takes place via the ranges 0x, 1x, 3x and 4x.
0x And 1x serve to access digital ranges and 3x and 4x serve to access word ranges.
Since, however, no distinction is made between digital and analog data for the Lenze
Modbus TCP bus coupler, the following assignment applies:
0x: Bit for master output; access via function code 01
h
, 05
h
, 0F
h
1x: Bit range for master input; access via function code 02
h
3x: Word range for master input; access via function code 04
h
, 17
h
4x: Word range for master output; access via function code 03
h
, 06
h
, 10
h
, 16
h
, 17
h
3x: 0001h
1x: 0001h
1x: 0002h
1x: 0003h
IN
3x: 0002h 3x: 0003h 3x: 0004h 3x: 0005h
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9
3x: 0006h
...
3x: 0007h 3x: 0008h 3x: 0009h
Byte 10 Byte 11 Byte 12 Byte 13 Byte 14 Byte 15 Byte 16 Byte 17
4x: 0001h
OUT
4x: 0002h 4x: 0003h 4x: 0004h 4x: 0005h
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9
4x: 0006h
...
4x: 0007h
Byte 10 Byte 11 Byte 12 Byte 13
0x: 0001h
0x: 0002h
0x: 0003h
3x: 000Ah
Byte 18 Byte 19
...
4x: 0008h 4x: 0009h
Byte 14 Byte 15 Byte 16 Byte 17
4x: 000Ah
Byte 18 Byte 19
...
SLIO070