User Guide

70
The meaning of B
1
, B
2
, B
3
is:
B
3
bit 0 Alarm for setpoint 1
B
3
bit 1 Alarm for setpoint 2
B
3
bit 2 Maximum relay ON time exceeded
B
3
bit 3 Life check error
B
3
bit 4 pH electrode broken or leakage
B
3
bit 5 Reference electrode broken or leakage
B
3
bit 6 Old pH probe
B
3
bit 7 Dead pH probe
B
2
bit 0 Calibration timeout
B
2
bit 1 Temperature probe broken
B
2
bit 2 free for future use (and set to 0)
B
2
bit 3 Digital transmitter error
B
2
bit 4 Power reset
B
2
bit 5 EEPROM corruption
B
2
bit 6 Watchdog reset
B
2
bit 7 free for future use (and set to 0)
B
1
bit 0 free for future use (and set to 0)
B
1
bit 1 free for future use (and set to 0)
B
1
bit 2 free for future use (and set to 0)
B
1
bit 3 free for future use (and set to 0)
B
1
bit 4 free for future use (and set to 0)
B
1
bit 5 free for future use (and set to 0)
B
1
bit 6 free for future use (and set to 0)
B
1
bit 7 free for future use (and set to 0)
Each bit is equal to 1 if the correspondent error is ON
and equal to 0 if the correspondent error is OFF.
Note After issued the NNHLD<CR> command to enter the hold
mode, the command has to be issued again for exit from the
mode. If the device is already in hold mode when the
NNHLD<CR> is issued the first time, the command has no
effect.
Note When a “NAK” or “CAN” char is sent, the whole process
reception buffer is cleared.
Note When the meter is receiving and answering to commands
other than “PHR”, “MVR”, “TMR”, “AER”, “STS”, the pri-
mary LCD displays “r485”.