sauter Equitherm EQJW 125, Руководство пользователя

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EQJW 125: Heating controller
Communication functions
7001029003 A
© Fr. Sauter Ltd.
49
Number of
coil register
Description Comments Set
(Coil = 0)
Delete
(Coil = 1)
Coil = 0
means
Coil = 1
means
158 Dial if error is
rectified
Dial the control station even if error is
rectified again (see CP21)
Yes Yes Inactive Active
159 Time-out for control
station
EQJW 125 closes the connection to
the control station after 30 minutes
(see CP24)
Yes Yes Inactive Active
Tab. 5: Modbus data points
If a function is specified to the EQJW 125 via modbus by the control station
through the holding register, the associated coil register is automatically set
to "1", i.e. deleted. In addition, the collective bit (number 4 of the coil register)
is also set to "1". Examples of this include holding registers 40106, 40107 and
41000, and also the associated coil registers 89, 90 and 116.
If coil register 57 is deleted, coil register 96 and coil register 4 are
automatically deleted as well.
Coil registers 4, 89, 90, 96 and 116 cannot be deleted directly. They are
deleted by modifying the associated holding register (or, in the case of coil
register 96, the associated coil register 57). The other registers can be set or
deleted. These results in the consequences listed in the table, i.e. a function
is enabled or disabled or the heating medium pump is switched on or off.
All the coil registers can be set. This means that the functions are controlled
from the EQJW 125 (numbers 57, 89, 90, 96, 116) or that the functions are
activated as a basic rule (nos. 150, 157, 158, 159). If coil register 4 is set,
then coil registers 89, 90, 96 and 116 are also set automatically as a result.
6.4 Modem operation
A modem of type KT DataMod10 can be connected to the communication
interface (terminals 18 to 21) via a special connection line
3
. This modem can
be used for Modbus communication with a control station, or to send error
messages via SMS. In both cases, the controller can build up a connection
automatically if a fault occurs.
The two functions can be combined; in this case, an error is signalled via
SMS and via Modbus.
6.4.1 Modbus operation via modem
CP02 must be set to 3 or 5. In Modbus mode, the controller accepts calls
from a control station to the modem. In the event of an error, the control
station is called on the telephone number entered at CP06.
3
The line between the controller and the modem must not be longer than 1.5 m for
reasons related to EMC.