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12
8.2 Modbus TCP data model
Input (PLC)
Source
Type Size
Use
Analogue inputs (DC)
<input name>
Real
4 bytes
Value of the signal connected
to the analogue input (IN1, IN2)
External inputs
<input name>
Real
4 bytes
Value of the external input (External_xx)
Objects
Time domain
<object name>
Value
Real
4 bytes
Object value in SI unit (m/s², m/s)
State
Byte
1 byte
(Alarm) state of the object
0: OK
1: warning alarm
2: damage alarm
3: inactive
4: error (description: see Error)
Error
Word
2 bytes
Error code for object state
Hex0000: no error
Hex0001: internal error
Hex0002: calculation error
Hex0004: speed out of range
Hex0008: speed unstable
Hex0010: invalid base line
Hex0020: invalid reference value (1)
Hex0040: invalid reference value (2)
Hex0100: deactivated by signal weighting
Hex0200: reference value out of range
Hex1000: warning alarm
Hex2000: damage alarm
Hex8000: object inactive (by variant)
Rotational
speed
Real
4 bytes
Trigger - rotational speed
Reference
value
Real
4 bytes
Trigger - reference value
Warning
alarm
Real
4 bytes
Limits - warning alarm (relative)
Damage
alarm
Real
4 bytes
Limits - damage alarm (relative)
Base line
Real
4 bytes
Limits - base line in SI unit
(m/s², m/s)
Frequency domain
<object name>
Value
Real
4 bytes
Object value in SI unit (m/s², m/s, m)
Содержание VSE153
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