REMEHA GTW-08 Modbus Konfigurationsanleitung Seite 8

en
5 Configuration
5.4 Modbus exception codes
5.5 Modbus data types
Tab.11 Modbus data types
Data type Description
UINT8/ENUM8 8-bit unsigned integer 03d
INT8 8-bit signed integer
UINT16 16-bit unsigned inte­
ger
INT16 16-bit signed integer
UINT32 32-bit unsigned inte­
ger
INT32 32-bit signed integer
8
Message Byte
CRC-16
In the instances above, the lag device will respond with a message stating
that register 32 until register 35 are affected by the write command.
Tab.10 Modbus exception codes
Exception code
01 (01 hex)
02 (02 hex)
03 (03 hex)
04 (04 hex)
10 (0A hex)
11 (0B hex)
Read Write Access trough
function function
code code
16d single register, where the data is
found in the lower byte of the
register
03d 16d single register, where the data is
found in the lower byte of the
register
03d 16d single register
03d 16d single register
03d 16d two registers
03d 16d two registers
read position Example hexadecimal
input
Lower xx
Upper xx
Name Description
Illegal function BMS requests a not-
supported function
code
Illegal data address BMS requests BDR
appliance for an out of
bounds word address
Illegal data value BMS sets an out of
range value on word
address to BDR appli­
ance
Lag device failure Writing a word address
in process. Writing not
finished on BDR appli­
ance
Gateway path unavail­ BDR appliance not de­
able tected by GTW-08
Modbus
Gateway target device Requested word ad­
failed to respond dress not yet read by
GTW-08 Modbus from
BDR appliance
7854678 - v.01 - 15092023
Min - max value
0 – 255
-128 – 127
0 – 65536
-32768 – 32767
0 – 4294967295
-2147483648 –
2147483647