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TCNM-AD/EX/SP Family Software Configuration Parameter Guide
42
Heartbeat
The following parameters allow configuring the Heartbeat message for communication through the Main Port.
The Heartbeat message is used to signal the device's or system's status at regular intervals to the Host. It has the
following format:
Timeout
This parameter defines the amount of time between two message transmissions. If the selected time out expires and
no transmission has occurred, the Heartbeat message will be transmitted.
Heartbeat Header String
This parameter signals the beginning of the Heartbeat message. It can be a string of up to 128 characters.
Selections: characters from
NUL
(00H) to
~
(7EH)
The Heartbeat Header String should be different from the Heartbeat Terminator String.
Heartbeat Field Separators String
This parameter determines the string used to separate the fields within the Heartbeat message. It can be a string of
up to 128 characters.
Selections: characters from
NUL
(00H) to
~
(7EH)
Counter Module
This parameter enables a counter to track the number of Heartbeat messages.
Selections:
Disable
no counter field in the Heartbeat message
10
counts cyclically from 0 to 9
100
counts cyclically from 0 to 99
1000
counts cyclically from 0 to 999
10000
counts cyclically from 0 to 9999
Custom
allows defining a custom counter start/stop range from 0 to 10000.
Custom Counter Module
This parameter is available when the Counter Module parameter is Custom. It allows defining the maximum count
number to reach before recycling.
Selections: a number from
2
to
10000
Counter Starting Value
For the Custom Counter Module this parameter selects the starting counter value.
Selections: a number from
0
to
9999
Counter Direction
Sets the counter direction, either
up
or
down
.
System Diagnostics
If checked it enables the System Diagnostics Field in the Heartbeat message. The System Diagnostics field is a fixed 2-
byte field (for the TCNM-AD/EX Family the second byte is always 0). The first byte has the following meaning:
1 = Reading Station OK
3 = Presence Sensor Failure
4 = Reading Station Failure