HA243821
Issue 5 Mar 98
Section5
Page 5 - 39
MODEL 346 INSTALLATION AND OPERATION MANUAL
5.7.5 PARAMETER ACCESS (Cont.)
Table 5.7.5e Alarm parameter definitions
Mne-
monic
For-
mat
Mne-
monic
CN *
CN *
Bits
Bits
Alarm parameter description
Access
wrt. host
AB
AE
AH
AS
AT
DE
DS
RQ
SP
TB
$0
to $F
6
0
6
2
5
B
5
3
6
5
5
A to X
A to X
A to X
1 to 6
A to X
N/A
Any
(0 to 9 &
A to F)
A to X
A to X
Any
Alarm deadband. Defines the value of the deadband setting. The
value is active if 'Deadband' is selected as alarm type (see
AT
below).
Alarm message print control. Enables or disables printing of alarm
status and alarm-on messages.
00 = Printing disabled
01 = Printing enabled
Alarm hysteresis. Defines the hysteresis value for the selected alarm
Alarm status for the selected channel
Sent as >1122334455, where 11 to 44 give the status of alarms 1 to 4
respectively as shown below. 55 is not used.
00 = No active alarms
03 = Active deadband alarm
01 = Active Abs. high
04 = Active Rate-of-Change (rising)
02 = Active Abs. low
05 = Active Rate-of-Change (falling)
Alarm type. Defines alarm type. See also
AB
and
SP
00 = Off
03 = Deadband (deviation) alarm
01 = Absolute high
04 = Rate-of-Change (rising)
02 = Absolute low
05 = Rate-of-Change (falling)
Alarm message.
Allows a 16-character message to be printed on alarm.
Relay status. Energisation status for relays. (De-energised in alarm)
0 = energised
1 = de-energised (default)
Relay 1
Relay 2
Relay 3
Relay 4
Relay 5
Relay 6
Relay 7
Relay 8
Relay 9
Relay 10
Relay 11
Relay 12
Relay 13
Relay 14
Relay 15
Relay 16
Relay action equation. Specifies relay trigger (See note page 5-35).
Channel entry: 0 to 9 and A to F (relays 1 to 16 respectively)
Alarm Setpoint.
Allows alarm setpoint to be accessed. See also
AB
Rate-of-change time base.
0 = per hour
1 = per minute
2 = per second
Relay Source. Selects the trigger source for relays.
00 = Off
01 = Action equation
02 = Totaliser counter output
Note...
$0 = relay 1
$8 = relay 9
$1 = relay 2
$9 = relay 10
$2 = relay 3
$A = relay 11
$3 = relay 4
$B = relay 12
$4 = relay 5
$C = relay 13
$5 = relay 6
$D = relay 14
$6 = relay 7
$E = relay 15
$7 = relay 8
$F = relay 16
R/W
R/W
R/W
Read only
R/W
R/W
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
R/W
R/W
R/W
N/A
N/A
N/A
N/A
N/A
N/A
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
N/A
N/A
N/A
N/A
* 'Any' in the CN column, means that any valid CN may be used - see table 5.7.5a