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Modbus services
40 S1A53844 01/2011
Read Device Identification (43/14)
Function 43/14 = 16#2B/0E
Request:
Response:
The total response size given in this example equals 46 bytes.
The response contains the following four objects:
Error response:
Refer to "Error response", page 41
.
Slave no.
Function code
MEI type Read Device Id
code
Object Id CRC16
2B 0E 01 ... 03 00 Lo Hi
1byte 1byte 1byte 1byte 1byte 2bytes
Slave no.
Function code
MEI type Read Device Id code Conformity level -------
2B
0E 01 ... 03 01
1byte 1byte 1byte 1byte 1byte
------- More follows
00
Next object Id
00
Number of objects
03
-------
1 byte 1 byte 1 byte
------- Id of object no. 1
00
Length of object no. 1
0D
Value of object no. 1
“Télémécanique”
-------
1 byte 1 byte 13 bytes
------- Id of object no. 2
01
Length of object no. 2
0D
Value of object no. 2
“ATV212H075M3X”
-------
1 byte 1 byte 13 bytes
------- Id of object no. 3
02
Length of object no. 3
04
Value of object no. 3
“0182”
-------
1byte 1byte 04bytes
------- CRC16
Lo Hi
1byte 1byte
• Object no. 1: Manufacturer name (always "Télémécanique", i.e., 13 bytes).
• Object no. 2: Device catalog number (ASCII string; for example: “ATV212H075M3X”, i.e., 13 bytes).
The length of this object varies according to drive type. Use the “Length of object no. 2” field to
determine the length.
• Object no. 3: Control version, in "MMmm" format where "MM" represents the major revision and "mm" the
minor revision (4-byte ASCII string; for example: "0182" for version 1.82).
Slave no. Function code
AB
Exception code
CRC16
Lo Hi
1byte 1byte 1byte 1byte 1byte