8. DIGITAL DATA OUTPUT
The entire programming of the sensors and the instrument, as well as all
measured values, can be provided as output to a printer or computer via serial
interface. The different interface modules can be connected to socket OUT1
(3). The connection to the instruments is described in the manual section 5.2.
Other modules for networking the instruments follow in the manual section 5.3.
8.1 Baud Rate, Data Format
All interface modules are factory-set and programmed to 9600 baud. To avoid
unnecessary problems when networking several devices the baud rate should
not be modified but the computer or printer should be set up accordingly. If this
is not possible, the values 150, 300, 600, 1200, 2400, 4800, 9600 or 57600bd
can be entered via keyboard if the rotary switch is in position BAUD RATE. The
input is started with the key
ENTER
. The display will start to flash and can be
modified by using the keys
▲
and
▼
. When the desired transmission rate has
been selected the programming can be terminated by operating the key
ENTER
once again. The baud rate setting will be stored in the EEPROM of the
interface module and will then be valid for use with all other ALMEMO
®
devices.
Function:
BAUD RATE
9 6 0 0
BR
Example:
9600 bd
Data format:
unchangeable 8 data bits, no parity, 1 stop bit
8.2 Device Address and Networking
All ALMEMO
®
instruments can be very easily networked to centrally acquire the
measured values of several instruments that are located at different places
(see manual 5.3). For communicating with networked devices it is mandatory
that each device has its own address as only one device is allowed to respond
to each command. Therefore, before any network operation it is necessary
that all connected devices are set to different device numbers. This is
performed with the rotary switch in position OUTPUT CYCLE. The key
F
is
used to select the function DEVICE ADDRESS ´
A
´ and the currently set
device number is displayed, which is usually factory-set to 00. It can then be
modified by the normal data entry (see 5.3).
ALMEMO
®
2290-8
43
Digital Data Output
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