Rockwell-automation 1760-DNET Pico DeviceNet Communications Module Use Instrukcja Użytkownika Pobierz pdf (Strona 100)

Publication 1760-UM003A-EN-P - September 2005

7-20 Pico GFX Control Commands

Read/write function block

data

Always note the following when working with function blocks:

• The relevant data is transferred in Intel format. In other words,

the first byte is the low byte (Byte 4) and the last byte (byte 7)

the high byte.

• The maximum data length is 4 bytes. All values must be

transferred in hexadecimal format.

• All 32-bit values are treated as signed values. When transferring

32-bit values, ensure that the appropriate value range is suitable

for long integers, i.e. signed.

32-bit value: –2147483648 .. 0 .. +2147483647

For SN1 – SN32: 0A For SN1 – SN32: 0A

2 3 Index

01 – 08

(1)

01 – 08

(1)

3 – 6 4 – 7 Data 1 – 4 00 Table 6.97

(1) Corresponds to NET-ID

Table 6.97 Byte 4 to 7: Data 1 to 4

Data 1 Bit76543210

RN1 SN1 ... 0/1

... 0/1

RN8 SN8 0/1

Data 2 Bit76543210

RN9 SN9 0/1

.... ...

RN16 SN16 0/1

Data 3 Bit76543210

RN17 SN17 0/1

... ...

RN24 SN24 0/1

Data 4 Bit76543210

RN25 SN25 0/1

... ...

RN32 SN32 0/1

Table 6.96

Byte Meaning Value (hex), sent by

Master Slave Master Slave

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 167 168

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Rockwell-automation 1760-DNET Pico DeviceNet Communications Module Use Instrukcja Użytkownika Strona 100