Tripp-Lite S3M25-100kVA Manual Del Propietário página 17

2. MODBUS Protocol Description
Here is an example of a request to read two groups of references from a remote device:
• Group 1: 2 registers from file 4, starting at register 1 (address 0001)
• Group 2: 2 registers from file 3, starting at register 9 (address 0009)
Segment
Function Code
Byte Count
Sub-Req. 1, Ref. Type
Sub-Req. 1, File Number: High
Sub-Req. 1, File Number: Low
Sub-Req. 1, Record Number: High
Sub-Req. 1, Record Number: Low
Sub-Req. 1, Record Length: High
Sub-Req. 1, Record Length: Low
Sub-Req. 2, Ref. Type
Sub-Req. 2, File Number: High
Sub-Req. 2, File Number: Low
Sub-Req. 2, Record Number: High
Sub-Req. 2, File Number: Low
Sub-Req. 2, Record Number: High
Sub-Req. 2, File Number: Low
Request
Hex
14
0E
06
00
04
00
01
00
02
06
00
03
00
09
00
02
Read File Record
Segment
Function Code
Resp. Data Length
Sub-Req. 1, File Resp. Length
Sub-Req. 1, Ref. Type
Sub-Req. 1, Record Data: High
Sub-Req. 1, Record Data: Low
Sub-Req. 1, Record Data: High
Sub-Req. 1, Record Data: Low
Sub-Req. 2, File Resp. Length
Sub-Req. 2, Ref. Type
Sub-Req. 2, Record Data: High
Sub-Req. 2, Record Data: Low
Sub-Req. 2, Record Data: High
Sub-Req. 2, Record Data: Low
17
Response
Hex
14
0C
05
06
0D
FE
00
20
05
06
33
CD
00
40