DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
4.3.2 CMD (Command code) and DATA
The content of access data depends on the command code. For descriptions of available command
codes, please refer to 4.2.2 in this chapter.
Example: read consecutive 8 words from address 0614H~H61B (T20~T27) of PLC Slave ID#1.
PC→PLC
“ 01 03 06 14 00 08 04 80”
Sent message:
Field Name
Example (Hex)
START
No data input ≥ 10 ms
Slave Address 01
Command code 03
Starting Address
06
14
Number of Points
00
08
CRC CHK Low 04
CRC CHK High 80
END
No data input ≥ 10 ms
PLC→PC
“ 01 03 10 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 08 72 98”
Feedback message:
Field Name
Example (Hex)
START
No data input ≥ 10 ms
Slave Address 01
Command code 03
Bytes Count 10
Data Hi (T20) 00
Data Lo (T20) 01
Data Hi (T21) 00
Data Lo (T21) 02
Data Hi (T22) 00
Data Lo (T22) 03
Data Hi (T23) 00
Data Lo (T23) 04
Data Hi (T24) 00
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