Plus RS-232 Manuel d'utilisateur télécharger pdf (Page 110)

Message Packet Formats

Chapter 5

5-31

7. WORD OFFSET — Contains the word offset between the desired

word and the beginning of the addressed file. The offset is zero for

the first word of a file. In word-range read and write commands, this

field can be combined with a symbolic file address to specify a word

address.

Bit Writes

This is a bit write command to modify the bits at the address specified by

either a word symbol, a file symbol plus a word offset, or a logical

address. This address must point to a word within a file. The function

code is 2. Unlike the current unprotected and protected bit writes in the

basic command set, this command can change the bits in a single word

only.

Command Packet:

TNSDST SRC CMD 00FNC

0F 02

00 ASCII SYMBOL

(8 CHARS. MAX.)

SET

MASK

W/F

TNSSTSCMD

SRCDST

TNSSTSCMD

SRCDST EXT

STS

Format:

(EXT STS Byte Is Optional)

Format When Reporting an Error

Format When Successful Execution

File Symbol Address Plus W

ord Of

fset

A. W

ord Symbol Address

STS

Logical Address

RESET

MASK

TNSDST SRC CMD 00FNC

0F 02

00 ASCII SYMBOL

(8 CHARS. MAX.)

WORD

OFFSET

W/F

STS SET

MASK

RESET

MASK

TNSDST SRC CMD FNC

0F 02

PLC-3 LOGICAL

ADDRESS

(2 -51 Bytes)

STS SET

MASK

RESET

MASK

NOTE:

This is the same as the reply packet

format for all current unprotected,

protected, and privileged bit writes.

1 2 ... 105 106 107 108 109 110 111 112 113 114 115 ... 234 235

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Plus RS-232 Manuel d'utilisateur Page 110

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