Liquisys M CLM223/253 Operation options
Endress+Hauser 25
6 Operation options
6.1 Quick operation guide
You have the following ways of operating the transmitter:
• On site via the key field
• Via the HART interface (optional, with corresponding order version) with:
– HART handheld terminal
– PC with HART modem and the Fieldcare software package
• Via PROFIBUS PA/DP (optional, with corresponding order version) by PC with a
corresponding interface and the Fieldcare software package or via a programmable logic
controller (PLC).
For operation via HART or PROFIBUS PA/DP, please read the relevant sections in the
additional Operating Instructions:
• PROFIBUS PA/DP, field communication for Liquisys M CXM223/253,
BA00209C/07/EN
• HART, field communication for Liquisys M CXM223/253, BA00208C/07/EN
The following section only explains operation via the keys.
6.2 Display and operating elements
6.2.1 Display
LED displays
A0027220
Indicates the current operating mode, "Auto" (green LED) or
"Manual" (yellow LED)
A0027222
Indicates the activated relay in the "Manual" mode (red LED)
The status of relays 3 and 4 is indicated on the LC display.
A0027221
Indicates the working status of relay 1 and 2
LED green: measured value within the permitted limit, relay
inactive
LED red: measured value outside the permitted limit, relay active
A0027218
Alarm display, e.g. in event of continuous limit value overshoot,
temperature sensor failure or system error (see error list)
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