Ecotech Serinus 44 - Table 14 - Block Check Operation; Table 15 - Bayern-Hassen Protocol Commands

Parts List and Schematics
Page 169
This is an example of a valid command to put the unit in the manual span mode if the instrument has
an ID of 843:
<STX>ST843 K<ETX>52
The block check operation is best shown with the following table:
Table 14 – Block Check Operation
Character
Hex Value
Binary
Block Check
<STX>
02
0000 0010
0000 0010
S
53
0101 0011
0101 0001
T
54
0101 0100
0000 0101
8
38
0011 1000
0011 1101
4
34
0011 0100
0000 1001
3
33
0011 0011
0011 1010
<SPACE>
20
0010 0000
0001 1010
K
4B
0100 1011
0101 0001
<ETX>
03
0000 0011
0101 0010
The binary block check value is 0101 0010 which is the hex value 52 as shown at the end of the
command string.
Supported Commands
The command set supported by the Bayern-Hassen protocol is:
Table 15 – Bayern-Hassen Protocol Commands
Command
Effect
DA<id>
Returns gas concentration.
DA
Returns gas concentration w/o id.
ST<id> M
Enter Measure mode.
ST<id> N
Enter Zero mode.
ST<id> K
Enter Span mode.
ST<id> S
Force a background check.
DA
Return the current instantaneous concentration.
Format
<STX>{DA}{<kkk>}<ETX>< bcc1><bcc2>
Or