Atlas Copco Power Focus 3000 User Manual

Fieldbus
228 (428) 9836 3123 01
maximum global data is 32 words on the bus. The point-to-point data transfer is handled by using one of
the following ModBus functions read holding registers, preset single register and preset multiple registers
all 40000 registers.
ModBusPlus module information
Variable
Limits
Information
Node Address
1 - 64
The node address cannot be
changed during operation.
Source Address
1 - 64
The source address cannot be
changed during operation.
Number of nodes in a ModBusPlus
network
Max 32 (with repeaters 64)
Bus length
Max 2000 m with repeaters
Bus cable length
Max 500 m
Data address
40001 + I (I = 0, 1, …) From PF
41025 + I (I = 0, 1, …) To PF
(Global data from PF data in the module starts
from address 40001 and point-to-point data starts
immediately thereafter. Global data to PF data in
the module starts from address 41025 and point-
to-point data starts immediately thereafter. For
example, if to PF string length is 8 bytes and to
PF global string length is 4 bytes, the global data
are mapped to address 41025 and 41026; the
point-to-point data are mapped to address 41027
and 41028.)
This address is based on words.
Baud rate
Automatic (1Mbit/s)
Automatically set from PLC at
connection.
Data to PF total length
0 - 200 bytes
(The string length is in Power Focus limited to
200 bytes. ModBusPlus standard allows 64 bytes
global data and 250 bytes point-to-point data.)
Must be the same in PF and PLC.
Data from PF total length
0 - 200 bytes
(The string length is in Power Focus limited to
200 bytes. ModBusPlus standard allows 64 bytes
global data and 250 bytes point-to-point data.)
Must be the same in PF and PLC.
Global string length (To/From PF )
0 - 64 bytes
Must be the same in PF and PLC.
Host Firmware Rev. 77

Atlas Copco Power Focus 3000 Specifications

General

Brand	Atlas Copco
Model	Power Focus 3000
Category	Control Systems
Language	English