Pulsafeeder Pulsar DLCM - Manual (Page 127)

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12. Reading returns the current condition from RAM that can be either 0=Security Off, 1=Tamper Proof,
2=Calibration Settings. Writing while security is disabled, enables the chosen security type. NOTE
that you should write the PIN # before enabling security here.
13. This is provided because you can only write items while in MODBUS MODE. 0=MANUAL MODE,
1=ANALOG MODE, 2=MODBUS MODE, 3=BATCH MODE.
14. Reading determines if we are currently performing a Find Zero Calibration. (0=no, 1=in progress)
This register can be written with a ‘1’ to force a Find Zero Calibration to occur.