63/148
Siemens Building Technologies
Commissioning instructions OZW775 V2.01
CE1C5663en
HVAC Products
Parameterize OZW775
22.06.2012
Command sequence: Settings > Communication > Modem
Data point
Explanation, example
Modem type
Default val: Analog
Setting val: ISDN
GSM
Analog
Use ref. DP "Modem type" to specify the modem
type you want to use to communicate via
modem interface RS-232.
The setting values for DPs "Command abortion
connection" and "Command opening
connection" depend on the modem type.
–
Fax protocol
Default val: Fax Class 2
Setting val: Fax Class 2
Fax
Class
2.0
Protocols "Fax Class 2" or "Fax Class 2.0" for
commercially available modems.
Modems with other protocols are not supported
for fax messages.
–
Baud rate RS-232
Default val: Automatic
Setting val: 1.2 kBd, 2.4 kBd,
4.8 kBd, 9.6 kBd,
19.2 kBd, 38.4 kBd,
57.6 kBd,
115.2
kBd
Baud rate to communication via modem
interface RS-232.
Setting value "Automatic" applies to plug&play
operation. This value helps determine the
highest possible baud rate upon the next reset
command. However, the baud rate can continue
to be set.
Command abortion
connection
Default val:
~~~+++~~~ATH0
Setting val: Depending on
modem
type
(see AT command)
AT command for ref. DP "Modem type"
Analog:
~~~+++~~~ATH0
ISDN:
~~~+++~~~ATH
GSM:
~~~+++~~~ATH
–
Reset command
Default val: ATZ
Setting val: (see AT command)
Setting value for modems with AT command
set:
ATZ
.
–
Initialization command
Default val:
ATE0V1Q0L1&C1&D2S0=2
Setting val: (see AT command)
Setting value for modems with AT command
set:
ATE0V1Q0L1&C1&D2S0=2
.
–
Command opening
connection
Default val:
Setting val: Depending on
modem
type
(see AT command)
AT command for ref. DP "Modem type"
Analog:
ATDT
ISDN:
ATD
GSM:
ATD
–
Command closure
Default val: ^M
Setting val: AT command
Setting value for modems with AT command
set:
^M
.
–
Modem message interval
Default val: 2 min
Setting val: 2…30 min, at
resolution 1 min
Setting value 2…30 minutes configures the time
between connection abortion and opening a
connection.
This time ensures that the central
communication unit can be called by modem
between 2 connections (e.g. from an external
operator station).
–
Modem
