Error Message; Alarm Status Characters; Table 5.7 Error Message; Table 5.8 Alarm Status Characters - Omega i-SERIES User Manual

5.4 Error Message

The instrument is capable of detecting different errors during the Communication process
and will transmit an indicating messages in Table 5.7 to the host computer.

Table 5.7 Error Message

ERROR MESSAGE
1 Command Error
2 Format Error
3 Parity Error
4 Serial Device Address Error
Where:
1. COMMAND ERROR occurs when:
a. Command prefix letter is not valid.
b. Command suffix is not valid.
2. FORMAT ERROR occurs when:
a. Length of message is either shorter than it should be.
b. Any other characters than "0 – F" used for hexadecimal values.
3. PARITY ERROR occurs when transmitted parity does not match with parity set on
the receiver.
4. Serial Device Address Error occurs if the new value is larger than 199 decimal.
1. The i-Series device will not respond to a command if the command's
recognition character does not match the meter's recognition character.
2. When in Multipoint mode, the device will not respond to the command if
addresses do not match.
3. If the device is in the Menu or Setpoint Mode and receives any transmitted
data, it quits that routine, displays COMM for up to 2 seconds, completes its
Communication job, and then resets the device, i.e., hard reset.

5.5 Alarm Status Characters

The meter upon receiving U01 Command will transmit alarm status characters
Table 5.8 shows the transmitted character for each of possible setpoint/alarm states.

Table 5.8 Alarm Status Characters

CHARACTER
@
A
B
C
Alarm1
OFF
ON
OFF
ON
20
Alarm2
OFF
OFF
ON
ON
CODE
?43
?46
?50
?56