Rockwell-automation 1734-485ASC POINT I/O ASCII User Manual Manual do Utilizador descarregar pdf (Página 49)

Publication 1734-UM009B-EN-P - July 2003

Configuring Your ASCII Module 2-23

Transmit String Data Assemblies

Transmit String Data Assemblies are the formats of the data you will

send from the ASCII module – array, short_string or string – to the

DeviceNet master. Which one you choose depends on your

application, and will modify the format of the data field.

Table 2.8 Transmit Data Format - Array Data Type

Byte 1 Byte 2 Byte 3 Byte 4 Byte 5-X Byte X+1

(Max = 132)

Next RX ID Byte

(Handshake Mode

Only)

Transaction ID Byte Reserved Reserved ASCII Data

(max 128 bytes)

End of String

Delimiter or Last

Data Byte

Table 2.9 Transmit Data Format - Short_String Data Type

Byte 1 Byte 2 Byte 3 Byte 4 Byte 5-X Byte X+1

(Max = 132)

Next RX ID Byte

(Handshake Mode

Only)

Transaction ID Byte Reserved Length ASCII Data

(max 128 bytes)

End of String

Delimiter or Last

Data Byte

Table 2.10 Transmit Data Format - String Type

Byte 1 Byte 2 Byte 3 Byte 4 Byte 5-X Byte X+1

(Max = 132)

Next RX ID Byte

(Handshake Mode

Only)

Transaction ID Byte Length (LSB) Length (MSB) ASCII Data

(max 128 bytes)

End of String

Delimiter or Last

Data Byte

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 75 76

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Rockwell-automation 1734-485ASC POINT I/O ASCII User Manual Manual do Utilizador Página 49