Modbus Protocol Technical Data - System Mode - ABB ACH580 Series User Manual

ACH580 E-Clipse bypass and packaged drive user manual

Modbus protocol technical data - system mode

Bypass overview
The new mode that is available on the E-Clipse bypass is selected by setting bypass
parameter 1625 to SYSTEM. With this configuration the drive node is still present
but network commands to start the drive are ignored. Instead, the user should send
start commands to the bypass node. In this mode, a start command will start the
bypass if in bypass mode or start the drive if in drive mode.
In system mode, the profile that controls system logic is always the ABB BYPASS
PROFILE which is sent to the bypass device. The setting of bypass parameter 5825,
PROFILE is only used for reference related control (e.g. ramp control bits) and for
the drive status word. These bits are used when writing to or reading the drive
device.
The following table defines the ABB bypass profile control word. Note that this word
is written to the bypass.
Bit
0
1
2
3
4
5
6
7
8
9
ABB Bypass Profile
Name Value
START 1
0
RESET 0->1
Other
RUN_DISABLE 1
0
FBLOCAL_CTL 1
0
START_DISABLE1 1
0
START_DISABLE2 1
0
START_DISABLE3 1
0
START_DISABLE4 1
0
OVERRIDE 1
0
LINK_ON 1
0
CONTROL WORD
Description
Start
Stop
Reset command Fault reset. Edge sensitive.
(no op)
Run disabled Inverted Run Permissive. The
STARTED status bit may be set even
Run Permissive on
when Run Permissive is missing.
FB Local mode for Field bus sets these bits to move the
control word bypass to field bus local control mode
requested of control word (field bus steals the
control).
FB Local mode for
control word not
requested
Start disabled 1 Inverted Start Interlocks. When Start
Interlock is missing, the drive doesn't
Start Interlock 1 on
set STARTED status bit.
Start disabled 2
Start Interlock 2 on
Start disabled 3
Start Interlock 3 on
Start disabled 4
Start Interlock 4 on
Override selected This selects override 2 which is
controlled by Group 17.
Override not
selected
Master is detected This is not settable from the field bus
in link but reflects the internal state of the link.
Link is down
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Comments
Embedded fieldbus