User's Manual

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11. Modbus TCP server
11. 9. “Read Device Identification” (43 = 16#2B) function
Request format:
Response format:
(1)The length of this field is variable. Use the “Length of object no. X” field associated with it to determine the length.
(2)In the case of the drive, this data item corresponds to [DEVICE NAME].
The response to a “drive identification” request does not cause an exception response.
Byte Meaning With the VW3A3310d Ethernet card
0 Function Code = 16#2B 16#2B
1 Type of MEI 16#0E
2 Read Device ID code
16#01: Basic
16#02: Regular
16#03: Extended
3 Object ID 16#00
Byte(s) Meaning With the VW3A3310d Ethernet card
0 Function code = 16#2B 16#2B
1 Type of MEI 16#0E
2 ReadDeviceId code 16#01
3 Degree of conformity 16#02
4 Number of additional frames 16#00 (a single frame)
5 Next object ID 16#00
6 Number of objects
3 for Basic
4 for Regular or Extended
7 Object no. 1 ID 16#00 = Vendor Name
8 Length of object no. 1 (A) 13
9…21 Value of object no. 1 (A ASCII characters) “Telemecanique”
22 Object no. 2 ID 16#01 = Product Code
23 Length of object no. 2 (B) 11 (for the following example only)
24…23+B Value of object no. 2 (B ASCII characters) (1) Example: “ATV71HU15M3”
24+B Object no. 3 ID 16#02 = Major.Minor Revision
25+B Length of object no. 3 (C) 4
26+B…29+B Value of object no. 3 (C ASCII characters) Example: “0201” for version 2.1
30+B Object no. 4 ID 16#06 = Application Name (2)
for Regular and Extended31+B Length of object no. 4 (D) 8 (for the following example only)
32+B…31+B+D Value of object no. 4 (D ASCII characters) (1) Example: “MACHINE 4”