Optidrive P2 Advanced User Guide Rev 2.00
www.invertekdrives.com
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4.
Fieldbus Interface Support
4.1.
Fieldbus Interface Options
Optidrive P2 supports a number of Fieldbus Interface Options, either directly on-board the drive (Modbus RTU, CAN Open) or using optional
plug in interfaces (e.g. Profibus DP). Where possible, these fieldbus interfaces also provide access to the drive parameters. This chapter details
the parameters that can be accessed, and any scaling used when reading or writing (where permissible) to the parameters.
Only one Fieldbus can be supported at a time. When a Fieldbus module is inserted into the drive (e.g. Profibus DP), the on-board fieldbus
interfaces such as Modbus RTU and CANbus are disabled. Also, only one internal bus can be supported, hence it is not possible to
simultaneously use CANbus and Modbus RTU.
4.2.
Fieldbus Support Overview
Optidrive P2 provides support for the following fieldbus networks and functions
Fieldbus
Interface
Drive Control
Drive Parameter Access
Modbus RTU
On-board RJ45
Yes
Access to all Writable Parameters
Modbus TCP
Optional OPT-2-MODIP-IN
Yes
Access to all Writable Parameters
CAN bus
On-board RJ45
Yes
Access to all Writable Parameters
Profibus DP
Optional OPT-2-PROFB-IN
Yes
DPV-1 Access to all Writable Parameters
Profinet IO
Optional OPT-2-PFNET-IN
Yes
Access to all Writable Parameters
DeviceNet
Optional OPT-2-DEVNT-IN
Yes
Access to all Writable Parameters
Ethernet IP
Optional OPT-2-ETHNT-IN
Yes
Access to all Writable Parameters
Ethercat
Optional OPT-2-ETHCT-IN
Yes
-
4.3.
Simple Drive Control
For the simplest implementation, all fieldbus systems allow control and monitoring of the drive using a 4 words input, 4 words output cyclic
process data exchange. The words are defined as follows :-
Master > Drive
Reference
Function
Scaling
Fieldbus Reference
Modbus RTU
Register
Modbus TCP
Register
Word 1
Drive control Word (Fixed)
N/A
PDI0*
1
1
Word 2
Frequency Setpoint (Fixed)
500 = 50.0Hz
2
2
Word 3
Torque Setpoint (or user selected value in
P5-14)
1000 = 100.0%
3
3
Word 4
Fieldbus Ramps (or user selected value in
P5-13)
3000 = 30.0
Seconds
4
4
Drive > Master
Reference
Function
Scaling
Fieldbus Reference
Modbus RTU
Register
Modbus TCP
Register
Word 1
Drive Status Word (Fixed)
N/A
PDO0*
6
256
Word 2
Output Frequency (Fixed)
500 = 50.0Hz
7
257
Word 3
Output Current (or user selected value in
P5-12)
100 = 10.0A
8
258
Word 4
Output Torque (or user selected value in
P5-08)
1000 = 100.0%
9
259
*These references apply to all other fieldbus systems
