Sensor Electronics SEC 3000, Instruction And Operation Manual

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SEC 3120 16-bit Modbus Manual Page 34 Of 46 Sensor Electronics Corporation
For Version 1.2 and above December 2012 P/N 1580282, Rev. 1, 20121228
Table 11: Function Code 06 Preset Holding Register
Internal
Register
Address Holding
Register
Address
Function Code 06- Preset Sensor Register Description
(Data bits and Parameter Specifics)
x = sensor number, or
0 to apply to all sensors.
2x03 42x04 *Scaled Integer Sensor Alarm Low Set Point.
4000 Hex must be added as a password to write value.
2x04 42x05 *Scaled Integer Sensor Alarm Mid Set Point.
4000 Hex must be added as a password to write value.
2x05 42x06 *Scaled Integer Sensor Alarm High Set Point.
4000 Hex must be added as a password to write value.
2x06 42x07
*Scaled Integer Sensor Calibration Value.
4000 Hex must be added as a password to write value.
2x10 42x11 **Sensor Zone ID.
4000 Hex must be added as a password to write value.
2x39 42x40 **Start Sensor Self Test Operation (00FF Hex Start, 0 stop)
4000 Hex must be added as a password to write value.
*The real value must be multiplied by the Gas Factor (2x08).
i.e. 2.12 ppm to set low set point register: scaled low set point = 2.12 X 10 (from 2x08) =
212 (00D4 Hex). When the password is added (4000 Hex) the complete value needed to
write the register and change the low set point then is 40D4 Hex.
** Zone ID (2010/42012) and Self Test (2039/42040) may be written to in region zero
(apply to all sensors) for a 3120 with two or more sensors attached, when the sensor role
is either "Unique" or "Identical" modes, but NOT when in "Single" sensor role- an
exception message will be generated and sent back to the master in place of a message
echo. If sensor role is "Identical", values must also be identical!
Internal
Register
Address Holding
Register
Address
Function Code 06- Preset Unit Register Description
(Data bits and Parameter Specifics)
2911 42912 New 3120 Unit Clock Month Value.
4000 Hex must be added as a password to write value.
2912 42913
New 3120 Unit Clock Day Value.
4000 Hex must be added as a password to write value.
2913 42914 New 3120 Unit Clock Year Value.
4000 Hex must be added as a password to write value.
2914 42915
New 3120 Unit Clock Hours Value.
4000 Hex must be added as a password to write value.
2915 42916 New 3120 Unit Clock Minutes Value.
4000 Hex must be added as a password to write value.
2916 42917 New 3120 Unit Clock Seconds Value.
4000 Hex must be added as a password to write value.
2917 42918 Set New 3120 Unit Clock NOW (00FF Hex set, 0 clear).
4000 Hex must be added as a password to write value.