ABB ACS880 Series Firmware Manual page 352

352 Parameters
No. Name/Value
60.52 DDCS controller
node address
1...254
60.55 DDCS controller
HW connection
Ring
Star
60.57 DDCS controller
link control
1...15
60.58 DDCS controller
comm loss time
0...60000 ms
60.59 DDCS controller
comm loss function
No action
Description
Selects the node address of the drive for communication with
the external controller. No two nodes on-line may have the
same address.
With an AC 800M (CI858) DriveBus connection, drives must
be addressed 1...24.
With an AC 80 DriveBus connection, drives must be
addressed 1...12.
With optical ModuleBus, the drive address is set according to
the position value as follows:
1. Multiply the hundreds of the position value by 16.
2. Add the tens and ones of the position value to the result.
For example, if the position value is 101, this parameter must
be set to 1×16 + 1 = 17.
Node address.
Selects the topology of the fiber optic link with an external
controller.
The devices are connected in a ring topology. Forwarding of
messages is enabled.
The devices are connected in a star topology (for example,
through a branching unit). Forwarding of messages is
disabled.
Defines the light intensity of the transmission LED of RDCO
module channel CH0. (This parameter is effective only when
parameter 60.51 DDCS controller comm port
CH 0. FDCO modules have a hardware transmitter current
selector.)
In general, use higher values with longer fiber optic cables.
The maximum setting is applicable to the maximum length of
the fiber optic link. See Specifications of the fiber optic
master/follower link (page 39).
Light intensity.
Sets a timeout for communication with the external controller.
If a communication break lasts longer than the timeout, the
action specified by parameter
loss function is taken.
As a rule of thumb, this parameter should be set to at least 3
times the transmit interval of the controller.
Notes:
• There is a 60-second boot-up delay immediately after
power-up. During the delay, the communication break
monitoring is disabled (but communication itself can be
active).
• With an AC 800M controller, the controller detects a
communication break immediately but re-establishing the
communication is done at 9-second idle intervals. Also
note that the sending interval of a data set is not the same
as the execution interval of the application task. On
ModuleBus, the sending interval is defined by controller
parameter Scan Cycle Time (by default, 100 ms).
Timeout for communication with external controller.
Selects how the drive reacts to a communication break
between the drive and the external controller.
No action taken (monitoring disabled).
is set to
60.59 DDCS controller comm
Def/FbEq16
1
Star
0
1
10
RDCO
100 ms
Fault
0