Chapter 2
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BB6032-14
Photoacoustic Gas Monitor
LumaSense Technologies
1314i / 1412i / 1512 / 3434i
Page 44 of 81
2.3.37 SELF_TEST?
*TST
causes the Monitor to carry out a self-test. The self-test can only
be carried out when the Monitor is in idle mode.
*TST?
Causes the Monitor to output the result of the self-test (NR_1).
The output has one of these values:
-4
The self-test is not performed
-3
The self-test is in progress
–2
The Monitor is not in idle mode (display mode). Therefore the
test can’t be carried out.
–1
Operational Error Flags have been set after the test.
0 No flag has been set after the test.
1 Warning Flags have been set after the test.
For more details about self-tests and Warning and Error messages, refer to
the Instruction Manual.
2.3.38 SERVICE_REQUEST_ENABLE
The Service Request Enable Register is a mask for the Status Byte (see
) i.e. a bit that is set in the Status Byte will only cause a Service
Request if the corresponding bit in the Service Request Enable Register is
also set. This register is, therefore, used by the controller to enable and
disable Service Requests.
S_R_E? will read out the decimal value of the SRQ enable register. The
output (NR_1) is in the range 0..255. For example, if the register contained
the binary number 0000 1000 and you typed:
S_R_E?
The Monitor would read out the decimal number 8, indicating that bit 4 is
set and that an error has occurred.
S_R_E sets the Service Request Enable Register. The number in the register
lies in the range 0..255. For example, if you typed:
S_R_E 8
