Modbus
55
Modbus output
Outputs can be programmed as
analogue
(numerical value) or
digital
(On/Off or Yes/No).
First, select the value to
be transmitted (function,
fixed
value,
system
value, DL bus, CAN bus).
The two following entries
depend on your selec
-
tion.
The current value is dis
-
played.
Type
Select Analogue/Digital
Designation
Every Modbus output can
be given its own designa
-
tion. The designation can
be selected from various
designation groups or
can be user defined, as
for the other inputs.
Device/function/address
Master mode: These
details relate to the tar
-
get device (slave) and
are therefore only availa
-
ble in master mode.
Slave mode: The device's
own number is specified
in the device settings.
The function is defined
by the input type
selected. The address of
the module is issued
automatically and counts
upwards irrespective of
the input number and
type.
Data type/byte sequence
Only for analogue values:
Details about the data
type of the output value
in the bus converter
(matched to the target
device).
Divisor/factor
Only for analogue values:
Input of a divisor or fac
-
tor for adaptation of the
output value to the target
device. Only whole num
-
bers without a unit can be output to the Modbus.
Example: 37.5 °C is output as "375". If only "37" is to
be output, enter 10 as the divisor.
Transmission condition
Analogue:
If change > 1.0 K:
If the current value has
changed by more than
1.0 K compared to the
last transmitted value, a
new transmission is
made. The unit used by
the source is applied
(minimum value: 0.1 K).
Blocking time 10 s:
If the value changes by
more than 1.0 K within
10 seconds of the last
transmission, the value
is still only retransmitted
after 10 seconds (mini
-
mum value: 1 second).
Interval time 5 m:
The value is transmitted
every 5 minutes even if it
has not changed by more
than 1.0 K since the last
transmission (minimum
value: 1 minute).
Digital:
If change Yes/No:
The value is transmitted
whenever
a
status
change occurs.
Blocking time 10 s:
If the value changes
within 10 seconds of the
last transmission, the
value is still only retrans
-
mitted after 10 seconds
(minimum
value:
1 second).
Interval time 5 m:
The value is transmitted
every 5 minutes even if it
has not changed since
the last transmission
(minimum
value:
1 minute).
Exception code
Error code for retrieval
problems with the slave
device. The code is not
refreshed until the inter
-
val time has expired.
