EVCO EVD120 - Manual (Page 35)

Evco S.r.l.
ModBUS PRJ314AA06 v1.02 12 th December 2006 page 7 of 8
Alarm memory $050F R
msk $0001: probe failure 1
msk $0002: probe failure 2
msk $0004: calibration error
Alarm memory min max $0510 R
msk $0001: probe failure 1 max
msk $0002: probe failure 2 max
msk $0004: calibration error max
msk $0100: probe failure 1 max
msk $0200: probe failure 2 max
msk $0400: calibration error max
Periodical request
counter init
$0511 R/W
Time for periodical request counter;
this value will be adjust with a random
time between 0 and 7.
Cold junction current
value (in °C)
$0512 R
UNUSED 1 $0513 R
UNUSED 2 $0514 R
UNUSED 3 $0515 R
Photo counter $0516 R
Refresh counter $0517 R
when this counter become null,
instrument’s status memory will be
updated. Reading this holding
register, memory will be update.
UNUSED 4 $0518 R
UNUSED 5 $0519 R
UNUSED 6 $051A R
UNUSED 7 $051B R
UNUSED 8 $051C R
Periodical request
counter
$051D R/W
Counter for periodical request; when
this counter become null, bit 4 in the
variation register become 1.
Refresh status memory
command
$0480 W
write 1 to refresh status memory;
writing 1, status memory will be
updated.
(*)
bit15 bit14 bit13 bit12 bit11 bit10 bit9 bit8 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
bit0, bit1: allways 0;
bit2, bit3: reserved;
bit4: periodical request by timer;
bit5: some variation occurred;
bit6: reset occurred;
bit7: internal status changed
bit8: alarm status changed