Bronkhorst RS232 interface - Manual (Page 15)

BRONKHORST ®
Page 15 RS232 interface 9.17.027
3.4.2 Parameter types
Parameter types
Type Id Bytes Bits Range
Character 00h 1 00000000 0…255
Integer 20h 2 00100000 0…65535
Float 40h 4 01000000 +‐1.18e‐38...+‐3.39e+38
Long 40h 4 01000000 4 bytes 0... 4294967296
String 60h X 01100000 length needs to be specified
Number of bytes per parameter type
Value 1 Value 2 Value 3 Value 4 Value 5 Value 6
Byte
Integer
Float
Long
String length String
The messages make use of bytes which are composed of data from several bytes.
An example of such a composed byte is shown below.
3.5 C HAINING
Chaining can be used to send or request more than one parameter per message. When the parameters are all
members of the same process, they can be chained at parameter level. When the parameters are members of
different processes, they can be chained at process level. A combination is also possible. For chaining at parameter
level the first bit of the parameter number should be set if there is following another parameter at the same process.
For chaining at process level the first bit of the process number should be set if there is another process following.
c t t p p p p p
Parameter number (FBnr. see tables)
Parameter type
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