Modbus Communications 7828 Density Transmitter Technical Manual
D-6 78285000_AA
183 User K1 value for API referral 4-byte float
184 User selected alarm variable Long integer D.5.13
185 User range (alarm) high value 4-byte float
186 User range (alarm) low value 4-byte float
192 Write-protected copy of K0 4-byte float
193 Write-protected copy of K1 4-byte float
194 Write-protected copy of K2 4-byte float
195 Write-protected copy of K18 4-byte float
196 Write-protected copy of K19 4-byte float
201 Unit’s original calibration date Long integer
202 Unit’s most recent calibration date Long integer
203 Unit’s serial number Long integer
204 Unit type Long integer D.5.14
256 Status Register Long integer D.5.15
257 Corrected line density
*
4-byte float
258 Corrected base density
*
4-byte float
259 Line temperature
*
4-byte float
260 Special function calculation result
*
4-byte float
261
Transducer time period (in
µs)
*
4-byte float
262 FRAM calculated checksums Long integer
263 PRT resistance
*
(in ohms) 4-byte float
264 Transducer coil pickup level
*
(in volts) 4-byte float
265 Transducer resonance Q value
2
4-byte float
266 Electronics board temperature (in °C)
267/8 Software version string
*
String
*
These are live values. Although they can be written to, it would be pointless.
1
Special function units are not used in units conversions (they are for indication only), so
can be set at any time.
2
This value is only valid when bit 3 (hex 08) is set in the diagnostics flag register (22),
after a 1 second pause.
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