Rockwell-automation 25-COMM-P PowerFlex PROFIBUS DPV1 Adapter Uživatelský manuál stáhnout pdf (Strana 48)

48 Rockwell Automation Publication 520COM-UM004A-EN-E - November 2013

Chapter 6 Using Acyclic Messaging

PROFIBUS Slot and Index for Drive and Adapter Parameters

For accessing any parameter within a drive, a general mechanism is used to map

the parameter with a PROFIBUS slot and index number.

Every drive device port has a base slot number which supports 256 indices in a

slot. These slot and index combinations are mapped to various drive and adapter

parameters through the 25-COMM-P adapter. These are the general formulas

used to determine the slot and index numbers for a specific parameter.

Slot Number = Base Slot Number + Quotient of (parameter number / 256)

Index Number = Remainder of (parameter number / 256)

Due to PROFIBUS standard requirements of various identification and

maintenance functions, there is an exception to the rule for assigning Host (drive)

parameters. When accessing Host parameters, the slot number will start at 0x01.

This is the formula used to determine the slot number for a Host parameter.

Slot Number = Base Slot Number + Quotient of (parameter number / 256) + 1

The following examples illustrates the use of these formulas.

Example 1: To a c c e s s Host parameter 41[Accel Time 1], see PROFIBUS Slot

and Index for Drive and Adapter Parameters on page 48 to find the slot number

associated with Drive 0, which can be used to access the first 256 parameters. To

access parameters 257...512, the slot number will increment by 1, and so on.

For Drive 0, the base slot number is 0x00 + 1 (per the exception). Therefore, the

slot number can be calculated using the general formula:

Slot Number = 0x00 + Quotient of (41 / 256) + 1 (for Drive Host Parameters) = 0x01

The index number will be the remainder of the Host parameter number divided

by 256, as shown using this formula:

Index Number = Remainder of (41 / 256) = 41

Example 2: To a c c e s s Device parameter 5 [Net Addr Cfg] in the adapter, see

PROFIBUS Slot and Index for Drive and Adapter Parameters

on page 48.

For Device parameters, the base slot number is 0x15. Therefore, the slot number

can be calculated using the general formula:

Slot Number = 0x15 + Quotient of (5 / 256) = 0x15

The index number will be the remainder of the Device parameter number divided

by 256, as shown using this formula:

Index Number = Remainder of (5 / 256) = 5

PROFIBUS Slot PROFIBUS Index Single Drive Multi-Drive

0x00 0x00...0xFF Not applicable – Profibus Not applicable – Profibus

0x01... 0x04 0x00...0xFF 0 – Drive 0 0 – Drive 0

0x05... 0x08 0x00...0xFF Not applicable 1 – Drive 1

0x09... 0x0C 0x00...0xFF Not applicable 2 – Drive 2

0x0D...0x10 0x00...0xFF Not applicable 3 – Drive 3

0x11...0x14 0x00...0xFF Not applicable 4 – Drive 4

0x15...0x18 0x00...0xFF 6 – Adapter 5 – Adapter

0x19 0x00...0xFF 5 – DSI Device Not applicable

>0x1A 0x00...0xFF Reserved Reserved

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 93 94

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