6.7.5 Autoaddressing of the MODBUS-Slaves
There are three pre-de
fi
ned commands to the MODBUS slaves for the autoaddressing.
Information
The autoaddressing is only possible with ZIEHL-ABEGG ECblue motors and frequency
converters with built-in AM-MODBUS modules.
1st phase
–
initialise addressing mode
Query data / received reply
Frame
Byte
Value
Description
Remarks
Head
0
0x10
(query)
0x20
(reply)
Meter
Runs automatically continuously from
0x01...0xFF, e.g. 0x10 and 0x20
1
0x08
Length
Always for function 103
MODBUS
2
0x00
Device address
(MODBUS)
00 = Broadcast
3
0x67
Command
0x67 (=103) ZIEHL-ABEGG user func-
tion
4
0x00
Sub-function (Hi)
0x0040 = auto-addressing
5
0x40
Sub-function (Lo)
6
0x00
Option value (Hi)
Phase 1
7
0001
Option value (Lo)
8
0x00
Data value (Hi)
Data value
9
0x00
Data value (Lo)
2nd phase
–
change address
Query data / received reply
Frame
Byte
Value
Description
Remarks
Head
0
0x11
(query)
0x21
(reply)
Meter
Runs automatically continuously from
0x01...0xFF, e.g. 0x11 and 0x21
1
0x08
Length
Always for function 103
MODBUS
2
0x01
Device address
(MODBUS)
Address the devices in order
3
0x67
Command
0x67 (=103) ZIEHL-ABEGG user func-
tion
4
0x00
Sub-function (Hi)
0x0040 = auto-addressing
5
0x40
Sub-function (Lo)
6
0x00
Option value (Hi)
Phase 2
Operating Instructions
NETcon
D-G-64NE
Communication
L-BAL-E273-GB 1631 Index 001
Part.-No.
21/27