R.5.24
SEL-421 Relay Reference Manual Date Code 20111215
SEL Communications Protocols
SEL-2600A RTD Module Operation
=>>MET T <Enter>
Relay 1 Date: 05/17/2003 Time: 13:42:13.220
Station A Serial Number: 0000000000
RTD Input Temperature Data (deg. C)
RTD 1 = -48
RTD 2 = Channel Failure
RTD 3 = 0
RTD 4 = 24
RTD 5 = Channel Not Used
RTD 6 = 72
RTD 7 = Channel Failure
RTD 8 = 120
RTD 9 = Channel Not Used
RTD 10 = 168
RTD 11 = 192
RTD 12 = 216
Figure 5.2 MET T Command Response
The MET T command displays the following messages:
➤ Channel Failure: This message is displayed for each channel
whose channel status bit is not asserted.
➤ Channel Not Used: This message is displayed for each channel
whose channel type is set to NA.
When there is a status problem with the SEL-2600A RTD module, the MET
T command will respond with an informational message, as shown in
Figure 5.3.
=>>MET T
SEL-2600 Failure
Figure 5.3 MET T Command Response for Status Problem
The three possible messages for status problems, with their interpretation, are
indicated in Table 5.21.
Table 5.21 MET T Command Status Messages
Message Interpretation
SEL-2600 Failure RTDFL status bit asserted
Communication Failure RTDCOMF status bit asserted
No data available Port Protocol not set to RTD
Channel Failure RTDxxST status bit asserted
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