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Commissioning
34
8
Commissioning
8.1
Post-installation check
All the final checks must be performed before the measuring point is put into operation:
• Checklist for "Post-mounting check"→ 14
• Checklist for "Post-connection check"→ 20
8.2
Switching on the transmitter
Once you have completed the post-connection checks, switch on the supply voltage. The
transmitter performs a number of internal test functions after power-up. During this
process, the following sequence of messages appears on the display:
Device name (scrolling text), device revision, firmware version, hardware version, bus address
If the switch-on procedure is not successful, the relevant diagnostic event, depending on the cause, is
displayed. For a detailed list of diagnostic events and the corresponding troubleshooting instructions, see
The device works after approx. 7 seconds. Normal measuring mode commences as soon as
the switch-on procedure is completed. Measured values and status values appear on the
display.
8.3
Configuring the measuring device
8.3.1
Enabling configuration
If the device is locked and the parameter settings cannot be changed, it must first be
enabled via the hardware or software lock. The device is write-protected if the lock symbol
is shown on the display.
To unlock the device
• either switch the write protection switch on the electronics module to the "ON" (open lock
symbol) position (hardware write protection), or
• deactivate the software write protection via the operating tool. See the description for
the 'User management' submenu. → 85
When hardware write protection is active (write protection switch set to the position
with the closed lock symbol), write protection cannot be disabled via the operating
tool. Hardware write protection must always be disabled before software write
protection can be enabled or disabled via the operating tool.
Display
All segments active
▾
All segments off
▾
Display version
▾
▾
Measured value or current status message
the "Diagnostics and troubleshooting" section.
iTEMP TMT142B
Endress+Hauser
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