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Revision to Connecting thermistors or PT1000 temperature sensors

Tony

The R parameter is the value (in ohms) of the series resistor on the controller electronics. You do not need to specify this value unless you are using a Duet 06 or a DueX4 expansion board. If you do specify it, the correct value is:
 
* Duet 2 WiFi, Duet 2 Ethernet, DueX2Duex 2 and DueX5Duex 5 expansion boards, and Duet 0850.8.5: 4700
* Duet 2 WiFi, Duet 2 Ethernet, DueX2Duex 2 and DueX5Duex 5 expansion boards, and Duet 0850.8.5: 4700
* Duet 2 Maestro: 2200
* Duet 06: older boards 1000, newer boards 4700
* DueX4Duex 4 version 0.2: 1000
* DueX4Duex 4 version 0.2a: older boards 1000, newer boards 4700
* DueX4Duex 4 version 0.2: 1000
* DueX4Duex 4 version 0.2a: older boards 1000, newer boards 4700
 
For the E0 thermistor, the command is similar except that P0 is replace by P1, for example:
[code]M305 P1 X501 R4700 ; heater 1 uses a PT1000 connected to thermistor channel 1 which has a 4.7K series resistor[/code]
 
Note: '''PT1000 sensors connected to thermistor inputs have lower resolution than PT100 sensors connected via the RTDPT100 daughter board'''. The accuracy of PT1000 sensors should be very good on the Duet 2 Maestro and generally good on the Duet 2 Wifi and Duet Ethernet. However, it may be poor on the Duet 06, Duet 085 and other SAM3X8E-based electronics.
Note: '''PT1000 sensors connected to thermistor inputs have lower resolution than PT100 sensors connected via the RTDPT100 daughter board'''. The accuracy of PT1000 sensors should be very good on the Duet 2 Maestro and generally good on the Duet 2 Wifi and Duet Ethernet. However, it may be poor on the Duet 06, Duet 085 and other SAM3X8E-based electronics.
 
=== Note for users of Duet 0.6 boards and DueX4Duex 4 boards ===
=== Note for users of Duet 0.6 boards and DueX4Duex 4 boards ===
 
Early Duet 0.6 boards, and most or all Duet 0.6 boards sold by Replikeo, use 1K series resistors instead of 4.7K., Likewise, DueX4Duex 4 0.2 boards and earlier DueX4Duex 4 0.2a boards use 1K resistors. For these boards, use R1000 in the corresponding M305 commands instead of R4700.
Early Duet 0.6 boards, and most or all Duet 0.6 boards sold by Replikeo, use 1K series resistors instead of 4.7K., Likewise, DueX4Duex 4 0.2 boards and earlier DueX4Duex 4 0.2a boards use 1K resistors. For these boards, use R1000 in the corresponding M305 commands instead of R4700.
 
=== Correcting the temperature calibration of Duet 0.6 and 0.85. boards ===

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