Lufft CHM 15k, User Manual

Page: 37 / 73

Operating Manual CHM 15k R13 / 07-2019
Communication via RS485 & Ethernet 37
Byte Value
1
Description
152-155 **** Software version FPGA
156 ; 3B HEX
157-160 **** Software version for signal processing OMAP
161 ; 3B HEX
162-163 ** System status:
“OK” or “ER”
164 ; 3B HEX
165-168 **** Outside temperature (Kelvin x 10)
169 ; 3B HEX
170-173 **** Inside temperature (Kelvin x 10)
174 ; 3B HEX
175-178 **** Detector temperature (Kelvin x 10)
179 ; 3B HEX
180-183 **** Detector control voltage (Volts x 10)
184 ; 3B HEX
185-188 **** Test pulse height
189 ; 3B HEX
190-195 ****** Laser operating hours (h)
196 ; 3B HEX
197-199 *** Window status
200 ; 3B HEX
201-205 ***** Laser frequency (PRF) (5 digits)
206 ; 3B HEX
207-209 *** Receiver status
210 ; 3B HEX
211-213 *** Light source status
214 ; 3B HEX
215-219 ***** Aerosol layer 1
220 ; 3B HEX
221-225 ***** Aerosol layer 2
226 ; 3B HEX
227 * Quality index aerosol layer 1
228 ; 3B HEX
229 * Quality index aerosol layer 2
230 ; 3B HEX
231 * BCC; Base Cloud Cover
232 ; 3B HEX
233 * TCC; Total Cloud Cover
234 ; 3B HEX
235-236 ** Checksum (two's complement of the sum of bytes 0 to 239 expressed in
hex code, excluding bytes 235 and 236)
237 <CR> 0D HEX
238 <LF> 0A HEX
239 <EOT> 04 HEX
Table 9 Extended data telegram format (see also Table 10); * = character.