ESA VT50 - Page 812

CHAPTER 38
Data exchange area
405.1200.037.2 - Rel.: 2.21 of 25/02/2008
38-6
Table 38.5: Meaning of bits of Word 0 - Status word
WORD 0
MEANING OF THE BIT
BIT NUMBER
VT
155
W
VT
185
W
VT
505
H
VT
505
W
VT
515
W
VT
525
H
VT
525
W
VT
555
W
VT
56x
W
VT
575
W
VT
580
W
VT
585
W
VT
585
WB
VT
595
W
WATCHDOG
Always at Status1
00000000000000
EDIT MODE
Status 1 when il terminal is in mode for changing fields
11111111111111
MESSAGES PRESENT
Status 1 so long as there is a message to display
-- -- -- -- -- -- -- -- -- -- -- -- -- --
MESSAGE PENDING
Status 1 so long as there is a message “in” but not yet consulted
-- -- -- -- -- -- -- -- -- -- -- -- -- --
ISA ALARM MESSAGES PRESENT
Status 1 so long as there is an alarm message to display
22----2222222222
ISA ALARM MESSAGES PENDING
Status 1 so long as there is an ISA alarm “in” but not yet
acknowledged
33----3333333333
COMMAND NOT VALID
Status 1 when the last command sent by the device has not been
carried out
44444444444444
ALARM HISTORY BUFFER 80% FULL
Status 1 when the alarm history buffer is 80% full and therefore
close to saturation
55----5555555555
ALARM HISTORY BUFFER FULL
Status 1 when the alarm history buffer is full and can hold no
more alarms
66----6666666666
MACRO FUNCTION ACTIVE
Status 1 when the VT is processing a macro function
77777777777777
BATTERY FLAT
Status 1 when the battery is near its minimum level for maintain-
ing the data in the RAM memory
-- -- -- -- -- -- -- 8 8 -- -- 8 -- --
-- : not present
Table 38.6: Meaning of value contained in the Word 1
WORD 1
MEANING OF THE VALUE
USED
VT
155
W
VT
185
W
VT
505
H
VT
505
W
VT
515
W
VT
525
H
VT
525
W
VT
555
W
VT
56x
W
VT
575
W
VT
580
H
VT
585
W
VT
585
WB
-- -- -- -- -- -- -- -- -- -- -- -- -- --
-- : not used