Rockwell-automation 56AMXN/B ControlLogix AutoMax Comm Module Instrukcja Użytkownika Pobierz pdf (Strona 47)

AutoMax DCSNet/RE RIO Module Page 47

Publication number 56AMXN-UM002A-EN-P November 2002

For instance 2, the size must be 16 (8 words). The command writes to

the broadcast registers (32-39). Normally you would do this only as a

DCS master.

The maximum message size limits the number of attributes you can write

in a single message to 7.

DCS Raw Write, Service Code 32h

The DCS raw write command can be used to write a block of data to the

DCS data area on the module. You tell it the starting offset and the data

length and it writes the data. This is a very powerful command, use it

carefully!

Enter the following parameters in the MSG instruction tags:

Message

Type

CIP generic

Service Type Custom

Service Code 32h

Class (hex) C4h

Instance 1

Attribute (hex) Leave blank

Source

Element

Enter source tag

Source

Length (bytes)

2 + length of data in words * 2, max 480 (max data

length = 239)

Destination Enter destination tag name, not used but must be

entered

Table 16 DCS Data Object DCS Raw Write Parameters

In the source tag

First word offset in words = drop * 64 + register, range is 0 to 55 *

64 + 63 = 3583

Remaining

words

Data[…]

The module checks that the offset in in range and that the combination of

offset and length is in range. If this is not true, it returns an error.

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 71 72

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Rockwell-automation 56AMXN/B ControlLogix AutoMax Comm Module Instrukcja Użytkownika Strona 47