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DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming

4.5.2 Command Code: 02, Read Status of Contact (Input point X is included)

Example: Read status of contact Y024~Y070 from Slave ID#01

PC→PLC “: 01 02 05 14 00 25 BF CR LF”

Sent message:

Field Name ASCII

STX :

Slave Address 01

Command code 02

Starting Address Hi 05

Starting Address Lo 14

Number of Points Hi 00

Number of Points Lo 25

Error Check (LRC) BF

END 1 0D (Hex)

END 0 0A (Hex)

Assume Number of Points in sent message is n (Dec), quotient of n/8 is M and the remainder is N.

When N = 0, Bytes Count in feedback message will be M; when N≠0, Bytes Count will be M+1.

PLC→PC “: 01 01 05 CD 6B B2 0E 1B E5 CR LF”

Feedback message:

Field Name ASCII

STX :

Slave Address

Command code

Bytes Count

Data (Coils Y033…Y024)

Data (Coils Y043…Y034)

Data (Coils Y053…Y044)

Data (Coils Y063…Y054)

Data (Coils Y070…Y064)

Error Check (LRC)

END 1 0D (Hex)

END 0 0A (Hex)

4-14

1 2 ... 611 612 613 614 615 616 617 618 619 620 621 ... 701 702

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Delta DVP-ES2 Manuale Utente Pagina 616

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