ABB DCS 400 - 7 Serial Interfaces; General Serial Interface Information

II K 7-1
Serial Interfaces
7 Serial interfaces
General
The DCS 400 is equipped with the following serial interfaces:
• Panel-Port (standard, built-in)
• RS232-Port (standard, built-in)
• Fieldbus-Interface (Adapter available as option)
The fieldbus interface is designed for control via an external PLC,
whereas RS232-Port and Panel-Port are intended for setting the
parameters in the drive. However, both of the standard interfaces
(RS232 and Panel-Port) can be configured to serve as an interface
for external drive control.
If one of the three serial interfaces is used for external drive control,
the communication of this interface should be supervised. The
response of the drive in case of a communication error can be pre-
determined by setting the Communication Parameters.
Note:
All three serial interfaces may operate in parallel. However, it is only
possible to customize (i.e. deviate from the default) the settings of
one port, which is selected in Parameter Modul Type (8.01). The
other ports are then operating with their default settings.
Drive configuration with serial communication
The drive can be operated (ON / RUN / Reset / Emergency Stop)
according to parameter Cmd Location (2.02) via terminal X4: or
one out of three serial interfaces (Panel-Bus or RS232-Bus or
Fieldbus Aadapter).
Reference values will be set according to parameters Torque Ref
Sel (3.15), Speed Ref Sel (5.01) and Aux Sp Ref Sel (5.26) via
terminal X2: or parameter or serial communicated.
Actual values will show up on terminal X2: and serial communicat-
ed according to AO1 Assign (6.05), AO2 Assign (6.08), Dataset
2.2 Ass (6.20) and Dataset 2.3 Ass (6.21).
Additional digital information can be communicated via Main Con-
trol Word and Main Status Word according parameter group 9-
Macro Adaptation, MSW Bit 11 (6.22), MSW Bit 12 (6.23), MSW
Bit 13 (6.24) and MSW Bit14 (6.25). Functionality of parameter
group 9 is only available in macros 1, 5, 6, 7 and 8 and not in macros
2, 3 and 4.
Channels for drive control, reference and feed-
back can be configurated independently. A mix-
ture out of conventional and serial channels is
allowed. Serial communication can also be used
only for monitoring the drive.
Fig.: 7/1 Overview Dataset 1.Drive Control via fieldbus communication
5.33
2.05
8.01
Dataset 1.1
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Dataset 1.2
Dataset 1.3
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AI2
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BUS
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OFF
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Functionality
of parameter
group 9 -
Macro Adaption
DataSet 1.1
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Fieldbus Adapter
RS232-Bus
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Panel Bus
Bit 11...15
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macro depend
Terminal
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Key
Switching is
caused by ON
command during
OFF state
On
Run
Digital Inputs
Main Ctrl Word
On
Run
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function is available
only in macro
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in macro
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,
because switching is done
by
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Bit 00...10
On/Run/Eme Stop/
Coast/Reset/Jog
Bit 11...15
configurable in
parameter group 9
DataSet 1.2
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DataSet 1.3
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Macro depend
AI1
Ai2
Bus Main Ref
Bus Aux Ref
Fixed Sp 1
Fixed Sp 2
Commis Ref1
Commis Ref2
Squarewave
Const Zero
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Macro depend
AI1
Ai2
Bus Main Ref
Bus Aux Ref
Fixed Torque
Commis Ref1
Commis Ref2
Squarewave
Const Zero
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Macro depend
AI1
Ai2
Bus Main Ref
Bus Aux Ref
Fixed Sp 1
Fixed Sp 2
Commis Ref1
Commis Ref2
Squarewave
Const Zero
5=Lim Sp Ctrl
=5
to Current
Controller
Ramp In Act
Ramp
Generator
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