London Electronics INTUITIVE-L, Instruction Manual, Page: 22 / 32

RS232/422 Serial Communications Output Option
You can have either an RS232 or an RS422 ASCII output at 1200 baud
representing the meter’s displayed value. You can have a continuous transmission
of readings, or a single transmission on demand.
RS232 O/P on terminal 16 (data+) and terminal 18(common)
RS422 O/P on terminals 16 & 17(Data + and -) and 18 (common)
String Format:
Data is made ASCII coded numerals, with embedded decimal point position if
one has been set on the display, with a preceding - sign if the display is negative,
with leading zero blanking, followed by a Carriage Return and a Line Feed.
So, for a displayed value of....
12345 the string will be <space><space><1><2><3><4><5><CR><LF>
-15.0 the string will be <space><space><-><1><5><.><0><CR><LF>
Commands:
The data output port is activated by connecting to the ENABLE terminal.
For RS232, the ENABLE port must be held high at a 5V level for as long as
serial data output is required, or, if only one string of data is needed, the ENABLE
line must be held high until the transmission starts, after which it may be taken
low again. The Sig- connection on terminal 17 may be used to provide the 5V
level if an external source is not available
For RS422, the ENABLE port operates in reverse, so must be held low to
enable transmission.
If you need a remote mimic display, the Model INTUITIVE-S is an ideal choice,
being a 1/8 DIN meter directly compatible with this output format.
Also, we manufacture a range of Large Format remote displays having digit
heights of 57mm, 102mm, 144mm, 200mm and 280mm. Ask us about the 1700
Series and the EasyReader Series.
Page 19
16 17 18 19
RS232 output
16 17 18 19
RS422 output
Common
Data out
Common
Data out -
Data out +
Close to
enable Close to
enable