Technische Alternative CAN-EZ2, Manual

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79
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
designation. The desig -
nation can be selected
from various designa -
tion 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
adjusting 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 out -
put 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 message is sent
whenever the status
changes.
Blocking time 10 s:
If the value changes
within 10 seconds of the
last transmission, the value is still only retransmitted
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 (mini -
mum value: 1 minute).
Exception code
Fault code for retrieval problems with the slave
device. The code is not refreshed until the interval
time has expired.