SI-Ethernet User Guide 165
Issue: 3
Safety
information
Introduction
Mechanical
installation
Electrical
installation
Getting started Parameters
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and Protocols
PC Tools
Applications
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Glossary of
terms
Index
7.5.10 Extended speed control
Output assembly object 0x15 (21
10
)
The PLC or scanner must be configured for 4 output bytes (or 2 output words) if this assembly
object is to be used.
Extended control word
The extended control word consists of 2 bytes (16 bits), with only the low byte used as shown.
The individual bit functions are described as follows:
Table 7-11 Extended speed control
Data word Function
Word 0 Extended control word.
Word 1 Speed reference (SpeedRef).
b15 b14 b13 b12 b11 b10 b9 b8
b7 b6 b5 b4 b3 b2 b1 b0
NetRef NetCtrl FaultRst RunRev RunFwd
Name
Control
Word
Description
RunFwd b0 Set this bit to command the drive to run in the forward direction.
RunRev b1 Set this bit to command the drive to run in the reverse direction.
FaultRst b2 A 0 to 1 transition will reset the drive if the drive was in a trip state.
NetCtrl b5
Used in conjunction with Pr 0.06.043 to enable the drive control word bits
b0-b6 and bit 9 (Pr 0.06.042).
NetRef b6
Set this bit to command the drive to use the remote speed reference value
specified in Word 1.
For the drive to run at the speed specified in Word 1, Pr 0.06.043 must be ON and bit 0,
bit 7 and bit 8 of the drive control word (Pr 0.06.042) must all be set to 1 and the external
hardware enable signal must be present.
For information on the drive control word see Table 7-10 Drive control word bit
functions on page 164.
Conformance with the pre-defined assembly objects specification can only be guaran-
teed if the speed reference configuration of the drive has not been changed from the de-
fault settings. For information on setting default values, refer to the appropriate drive user
guide.
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