![background image](http://html1.mh-extra.com/html/hanna-instruments/hi-504901/hi-504901_instruction-manual_3639738029.webp)
57
56
SMS ENABLE/DISABLE LEDs
These two LEDs keep indication about SMS sending enable/
disable status and are used on fault interface related condition
to provide to the user a “visual” indication of actual problem.
•
green LED on & red LED off
, in idle state: SMS sending
enabled
•
green LED off & red LED on
during interface start-up
procedure or in idle state if SMS sending is disabled
•
green LED blinking & red LED off
, in power failure
status: SMS sending enabled
•
green LED off & red LED blinking
, in power failure
status: SMS sending disabled
•
green LED blinking & red LED on
, battery test failed
and SMS sending enabled
•
green LED on & red LED blinking
, battery test failed
and SMS sending disabled
•
green & red LEDs blinking
, cellular error is active
•
green & red LEDs on
, EEPROM data corruption
DIGITAL OUTPUT STATUS LED
This yellow LED keeps indication about digital output contact
status (if software enabled).
•
LED off
, digital output contact open
•
LED on
, digital output contact close
CELLULAR SIGNAL LEDs
These green LEDs keep indication about signal strength for
cellular phone module.
•
Cell signal #1 & Cell signal #2 LEDs off
, no signal
or cellular error found or power failure status
•
Cell signal #1 LED on & Cell signal #2 LED off
,
medium signal condition
•
Cell signal #1 & Cell signal #2 LEDs on
, strong
signal condition
CELLULAR STATUS LED
When available, this yellow LED displays the operating status
of the cellular phone terminal.
•
LED off
, cellular engine off
•
LED on
, cellular engine on but not registered to the network
•
LED blinking (slow)
, cellular engine on and registered to
the network
•
LED blinking (fast)
, cellular engine registered to the net-
work and a call is in progress
LED INDICATORS
Find here below a brief explanation of all possible LEDs indi-
cations of
HI504901
interface.
RS232 CHANNEL# LED
This red LED keeps indication about device connected to the
RS232 channel#.
•
LED off
• in idle state: instrument not configured or not in alarm
• during PC communication session: a communication is
in progress with another channel or not yet channel selec-
tion made by remote PC
•
LED on
, in idle state: instrument configured and in alarm
•
LED blinking
, during PC communication session: a com-
munication is in progress between remote PC and device
connected to this RS232 channel
RS485 PORT LED
This red LED keeps indication about devices connected to the
RS485 port.
•
LED off
• in idle state: no instrument is configured or no alarm is on
• during PC communication session: a communication is
in progress with another channel or not yet channel selec-
tion made by remote PC
•
LED on
, in idle state: at least one instrument is configured
and at least one alarm is on
•
LED blinking
, during PC communication session: a com-
munication is in progress between remote PC and one of
RS485 instruments
DIGITAL INPUT PORT LED
This red LED keeps indication about digital input status (if soft-
ware enabled) depending on last interface configuration setting.
•
LED off
• in idle state: digital input not configured or digital contact
close (if configured to be on when contact is open) or
contact open (if configured to be on when contact is close)
• during PC communication session: when a call is in
progress with any instrument
•
LED on
, in idle state: digital input configured and close (if
configured to be on when contact is close) or contact open (if
configured to be on when contact is open)
Summary of Contents for HI 504901
Page 1: ...HI 504901 GSM Supervisor Instruction Manual...
Page 34: ...67 66 USER NOTES...