Information
The addressing runs until the last device (max. number of devices is 64) is re-addressed.
The byte fort he device address (to address the device, byte no. 3) is consecutive and is
assigned
fi
xed by the command in phase 1.
The new slave address (byte no. 7) on the other hand is freely selectable providing that it
is between 1 and 247.
3rd phase
–
end addressing mode
Query data / received reply
Frame
Byte
Value
Description
Remarks
Head
0
0x14
(query)
0x24
(reply)
Meter
Runs automatically continuously from
0x01...0xFF, e.g. 0x14 and 0x24
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 3
7
0003
Option value (Lo)
8
0x00
Data value (Hi)
Data value
9
0x00
Data value (Lo)
6.7.6 Error byte
When the addressed MODBUS device detects an error, it replies with the appropriate
command. This so-called error command results from the requested command added
with 0x80. If an error occurs when writing, for example, this would be 0x06 + 0x80 =0x86
Operating Instructions
NETcon
D-G-64NE
Communication
L-BAL-E273-GB 1631 Index 001
Part.-No.
23/27
