Rockwell-automation 1760-DNET Pico DeviceNet Communications Module Use Manual de usuario descargar pdf (Pagina 67)

Publication 1760-UM003A-EN-P - September 2005

Application Examples for Pico 6-23

Example:

Data 1 (Byte 4) = 0xA3, Data 2 (Byte 5) = 0x03

l Resulting 16-bit value = 03A3

hex

Meaning: HY, OS, F2, F1 are assigned a constant; I1, I2 are assigned to

a variable such as I7, I8 C2...etc., appears in the Parameter menu;

The output of the analog value comparator is active for as long as the

comparison (I1 x F1) + OS = (I2 x F2) + HY is fulfilled.

Counter relays: C1 – C16

Table 6.42 Index 01 – Control byte

FB output Data 3

Bit76543210

– – – – – – –

(1)

(1) Status 1 if comparison condition is fulfilled.

Table 6.43 Telegram Structure

Byte Meaning Value (hex), sent by

Master Slave Master Slave

Attribute ID

Read 89 –

Write 8D –

0 Response:

Read successful – C2

Write successful – C1

Command rejected –

(2)

(2) Possible causespage 6-34

0 1 Type 8F 8F

1 2

Instance

(1)

(1) Pico provides 16 counters C1 to C16 for use as required. These can be addressed using the instance (0 – F).

00 – 0F 00 – 0F

2 3 Index Table 6.44 Table 6.44

3 – 6 4 – 7 Data 1 – 4 depending on

index,

Table 6.45

depending on

index,

Table 6.45

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 167 168

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Rockwell-automation 1760-DNET Pico DeviceNet Communications Module Use Manual de usuario Pagina 67