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System Markers

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The following variables contained in the GLOBAL_SYSTEM group of the variables table, have the fixed tag. The tag of system markers were divided into groups and subgroups, where:

 

Groups:

CFW: reading and writing variables of the MVW3000G4 frequency inverter.

 

Subgroups:

STS: reading variable (status);
CMD: writing variable (command).

 

 

Reading System Markers (Status)

 

Reading - Function Modbus 02 "Read Discrete Inputs"

 

Address

Bit

Modbus

Tag

Description

Ladder

%SB0000

0

0

SYS_FREQ_2HZ

Oscillator with frequency of 2 Hz

%SB0000

1

1

SYS_PULSE_1SCAN

Pulse during the first scan cycle

%SB0000

2

2

SYS_FALSE

Always in 0

%SB0000

3

3

SYS_TRUE

Always in 1

Logical Status

%SB0002

1

17

CFW_STS_RUN_COMMAND

The run motor command is active in the inverter

%SB0002

2

18

CFW_STS_HMI

Inverter at HMI mode (0-Remote, 1-HMI)

%SB0002

3

19

CFW_STS_STO_ACTIVE

STO active

%SB0002

4

20

CFW_STS_QUICK_STOP

Inverter is executing quick stop

%SB0002

5

21

CFW_STS_SEC_RAMP_ACTIVE

The inverter is configured to use the first or second ramp values (0-First, 1-Second)

%SB0002

6

22

CFW_STS_CONFIG_MODE

The inverter is in the configuration mode

%SB0002

7

23

CFW_STS_ALARM_ACTIVE

The inverter is in alarm condition

%SB0003

0

24

CFW_STS_MOTOR_RUNNING

The inverter is running the motor at the speed reference, or executing either the acceleration or the deceleration ramp

%SB0003

1

25

CFW_STS_GENERAL_ENABLED

General Enable is active and the inverter is ready to run the motor

%SB0003

2

26

CFW_STS_FWD_REV_DIRECTION

The motor is running in the reverse or forward direction (0-Reverse, 1-Forward)

%SB0003

3

27

CFW_STS_JOG_ACTIVE

The JOG function is active

%SB0003

4

28

CFW_STS_LOC_REM_MODE

The inverter is in local or remote mode (0-Local, 1-Remote)

%SB0003

5

29

CFW_STS_UNDERVOLTAGE

The inverter is in undervoltage

%SB0003

6

30

CFW_STS_PID_AUTO

PID Mode (0-Manual, 1-Auto)

%SB0003

7

31

CFW_STS_FAULT_ACTIVE

The inverter has detected a fault

HMI keys

%SB0006

0

48

CFW_STS_KEY_ESC

ESC key was pressed

%SB0006

1

49

CFW_STS_KEY_UP

UP key was pressed

%SB0006

2

50

CFW_STS_KEY_HELP

HELP key was pressed

%SB0006

3

51

CFW_STS_KEY_DIRECTION

DIRECTION key was pressed

%SB0006

4

52

CFW_STS_KEY_DOWN

DOWN key was pressed

%SB0006

5

53

CFW_STS_KEY_LOC_REM

LOC/REM key was pressed

%SB0006

6

54

CFW_STS_KEY_START

START (I) key was pressed

%SB0006

7

55

CFW_STS_KEY_JOG

JOG key was pressed

%SB0007

0

56

CFW_STS_KEY_STOP

STOP (O) key was pressed

%SB0007

1

57

CFW_STS_KEY_RIGHT

RIGHT key was pressed

%SB0007

2

58

CFW_STS_KEY_ENTER

ENTER key was pressed

%SB0007

3

59

CFW_STS_KEY_LEFT

LEFT key was pressed

 

 

Reading - Function Modbus 04 "Read Input Registers"

 

Speed

%SW0200

--

12100

CFW_STS_MOTOR_SPEED_RPM

Motor speed in rpm

%SW0202

--

12101

CFW_STS_MOTOR_SPEED_13BITS

Motor speed in 13 bits (8192)

%SW0204

--

12102

CFW_STS_MOTOR_SYNC_SPEED

Motor synchronous speed in rpm

%SW0206

--

12103

CFW_STS_SPEED_REFERENCE

Speed reference after ramp in rpm

%SW0208

--

12104

CFW_STS_SPEED_REFERENCE_13BITS

Speed reference after ramp in 13 bits

Alarm and Fault

%SW0210

--

12105

CFW_STS_PRES_ALARM

Alarm number that may be present in the inverter

%SW0212

--

12106

CFW_STS_PRES_FAULT

Fault number that may be present in the inverter

Current and Torque

%SW0214

--

12107

CFW_STS_RATED_CURRENT

Inverter rated current (HD) in A (x10)

%SW0216

--

12108

CFW_STS_MOTOR_CURRENT

Motor current without filter in A (x10)

%SW0218

--

12109

CFW_STS_MOTOR_TORQUE

Motor torque without filter in % (x10)

 

 

Writing / Reading System Markers (Command)

 

Reading - Function Modbus 01 "Read Coils"

Writing - Function Modbus 05 "Write Single Coil" and 15 "Write Multiple Coils"

 

Address

Bit

Modbus

Tag

Description

Logical Command

%CB0008

0

64

CFW_CMD_RUN_STOP

Run the motor according to the speed reference value (0-Stop, 1-Run)

%CB0008

1

65

CFW_CMD_GENERAL_ENABLE

Enables the inverter allowing the motor operation (0-Disable, 1-Enable)

%CB0008

2

66

CFW_CMD_SPEED_DIRECTION

The motor runs in the direction indicated by the speed reference (0-Reverse, 1-Forward)

%CB0008

3

67

CFW_CMD_JOG

Enables the JOG function (0-Disable, 1-Enable)

%CB0008

4

68

CFW_CMD_R2_REM_MODE

Selects the inverter remote operation mode (0-R1, 1-R2)

%CB0008

5

69

CFW_CMD_SECOND_RAMP

Selects the ramp to accelerate and decelerate the motor (0-First, 1-Second)

%CB0008

6

70

CFW_CMD_QUICK_STOP

-

%CB0008

7

71

CFW_CMD_FAULT_RESET

Executes the fault reset command