Rockwell Automation 20-COMM-B BACnet MS/TP Adapter User Manual

Page 54

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Adapter Parameters

02

[Comm Loss Action]
Sets the action that the adapter and drive will take
if the adapter detects that network
communications have been disrupted. This setting
is effective only if I/O that controls the drive is
transmitted through the adapter.

Default:

0 = Fault

Values:

0 = Fault
1 = Stop
2 = Zero Data
3 = Hold Last
4 = Send Flt Cfg

Type:

Read/Write

Reset Required:

No

03

[Comm Loss Time]
Sets the communication loss timeout period in
seconds. The value zero disables this feature.

Default:

10 seconds

Minimum:

0 seconds

Maximum:

180 seconds

Type:

Read/Write

Reset Required:

No

04

[Flt Cfg Logic]
Sets the Logic Command data that is sent to the
drive if Parameter 02 - [Comm Loss Action] is
set to “Send Flt Cfg” and network communications
are disrupted.

The bit definitions will depend on the product to
which the adapter is connected. See the
documentation for the drive being used.

Default:

0000 0000 0000 0000

Minimum:

0000 0000 0000 0000

Maximum:

1111 1111 1111 1111

Type:

Read/Write

Reset Required:

No

05

[Flt Cfg Ref]
Sets the Reference data that is sent to the drive if
Parameter 02 - [Comm Loss Action] is set to
“Send Flt Cfg” and communications are disrupted.

Default:

0

Minimum:

0

Maximum:

4294967295

Type:

Read/Write

Reset Required:

No

Important: If the drive uses a 16-bit
Reference, the most significant word of this
value is ignored.

06

[Baud Rate Cfg]
Sets the baud rate (kilobits per second) at which
the adapter communicates. (Updates Parameter
07 - [Baud Rate Act]
after a reset.)

Default:

0 = Autobaud

Values:

0 = Autobaud
1 = 9600 kbps
2 = 19200 kbps
3 = 38400 kbps
4 = 76800 kbps

Type:

Read/Write

Reset Required:

Yes

Parameter
No. Name and Description

Details

!

ATTENTION: Risk of injury or equipment damage exists. Parameter 02 - [Comm
Loss Action]
lets you determine the action of the adapter and connected drive if
communications are disrupted. By default, this parameter faults the drive. You
can set this parameter so that the drive continues to run. Precautions should be
taken to ensure that the setting of this parameter does not create a risk of injury
or equipment damage. When commissioning the drive, verify that your system
responds correctly to various situations (for example, a disconnected drive).

!

ATTENTION: Risk of injury or equipment damage exists. Parameter 03 - [Comm
Loss Time]
lets you determine how long it will take the adapter to detect network
communication losses. By default, this parameter sets the timeout to ten (10)
seconds. You can set it so that the duration is shorter, longer, or disabled. When
set to disabled, this also disables adapter Parameter 02 - [Comm Loss Action].
Therefore, a communications fault action will be ignored. Take precautions to
ensure that the setting does not create a risk of injury or equipment damage.
When commissioning the drive, verify that your system responds correctly to
various situations (for example, a disconnected cable).

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