Invertek optidrive cp2 - Drive Control Word Definition; Drive Status Word Definition; Parameter Access Overview

Optidrive P2 Advanced User Guide Rev 2.00
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Fieldbus Interface Support
4
4.4. Drive Control Word Definition :-
Bit
Function
0
0 : Stop
1 : Run
1
0 : Normal Operation
1 : Fast Stop (P2-25)
2
0 : No Function
1 : Reset Fault
3
0 : Normal Operation
1 : Coast Stop
4.5. Drive Status Word Definition
Bit
Function
0
0 : Drive Stopped
1 : Drive Running
1
0 : Drive Healthy
1 : Drive Tripped
2
No Function
3
0 : Drive Ready
1 : Drive Inhibit
4
0 : Maintenance Time Not Elapsed
1 : Maintenance Time Elapsed
5
0 : Not In Standby
1 : In Standby
6
No Function
7
No Function
8
No Function
9
Fault Code as listed in section 5
10
11
12
13
14
15
4.6. Parameter Access Overview
The accessible parameter numbers and respective scaling are listed in the following tables. The method to access the parameters depends on
the fieldbus type in use as described in the following section.
The R/W column indicates whether the values are Writeable as well as readable (R/W) or Read Only (R)
The data types for the parameter are defined as follows :-
WORD Hexadecimal Word
U16 Unsigned 16 Bit Value
S16 Signed 16 Bit Value
4.6.1. Modbus RTU
The table shows the Modbus RTU register number corresponding to each parameter value. All values are holding registers.
All User Adjustable parameters (Groups 1 to 9) are accessible by Modbus, except those that would directly affect the Modbus
communications, e.g.
 P5-01 Communication Protocol Select
 P5-02 Drive Fieldbus Address
 P5-03 Modbus RTU Baud Rate
 P5-04 Modbus RTU Data Format
All parameter values can be read from the drive and written to, depending on the operating mode of the drive – some parameters cannot be
changed whilst the drive is enabled for example.
Parameter access via Modbus RTU is only possible when no other communication interface is installed in the drive, e.g. it cannot be used
simultaneously with a Profibus DP interface present.
When accessing a drive parameter via Modbus RTU, the Register number for the parameter is the same as the parameter number,
E.g. Parameter P1-01 = Modbus Register 101.
Modbus RTU supports sixteen bit integer values; hence parameter values are transferred as integers, ignoring the decimal point.
E.g. Read Value of P1-01 = 500, therefore this is 50.0Hz.
Scaling applied to other parameters is described in the tables.
In addition to the parameter specific register listed, Optidrive P2 also supports indirect Read and Write Access to all addressable parameters
using only two Registers.