ROTRONIC MBW 473 - Manual (Page 40)

36 MBW473_MANUAL_E_V2.0
6.2 Communication Settings
To communicate with the 473, set your computer to the following configuration:
Baud Rate: 9600
Data Bits: 8
Stop Bits: 1
Handshaking: None
6.3 Command Syntax
This section details the general syntax guidelines regarding termination, leading and trailing spaces,
case sensitivity, and numeric values. Throughout this section, characters originating from the comput-
er will be shown for illustrative purposes in this font. Characters originating from the 473 will be
shown in this font.
General Use
All commands require a question mark to indicate you are requesting data. When requesting data from
the 473, follow the command with ?, the question mark character. For example, the following requests
the current pump status.
Pump.on?
The 473 will reply with the current pump status (1 = on, 0 = off).
Termination Characters
All commands must be terminated with either a carriage return C
R
or a carriage return linefeed combi-
nation
C
R
L
F
.
Regardless of the command sent, the 473 will reply with a carriage return linefeed
C
R
L
F
at the end of
the response, provided the command is recognized as valid. Here is an example:
DP? C
R
(sent by the computer to the 473)
-10.015 C
R
L
F
(sent by the 473 back to the computer)
If the command is unrecognized, the 473 does not respond. See example below.
Abcdef? C
R
(invalid command sent from the computer)
(no response from the 473)