Bronkhorst®
Instruction Manual ES-FLOW™ 1xxC
9.17.153A
26
Alarm Mode
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char
RW
0…3
118
97/3
0x0C23/3108
Available modes:
Value
Description
0
Alarm off
1
Alarm on absolute limits
2
Alarm on limits related to setpoint (response alarm)
3
Alarm at power-up(e.g. after power-down)
(On DeviceNet™ instruments, only modes 0 and 1 are available)
Alarm Info
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char
R
0…255
28
1/20
0x0034/53
This parameter provides information about the event type(s) that triggered an alarm situation. The value is a bitwise
summation of the issued alarm types; convert the value to binary to see which types are issued. The following alarm types
can be issued:
Bit
Value
Type
Description
0
1
Error
Error flag raised
1
2
Warning
Warning flag raised
2
4
Minimum alarm
Measure
<
Alarm minimum limit
3
8
Maximum alarm
Measure
>
Alarm maximum limit
4
16
Batch counter alarm
Batch counter reached its limit
5
32
·
This bit only: Power-up alarm
Alarm possibly caused by a power dip
·
If combined with bit 2 or 3:
Response alarm
Difference between
Measure
and
Setpoint
too big
6
64
Master/slave alarm
Setpoint out of limits (caused by
Slave factor
)
7
128
Hardware alarm
Hardware error
Alarm Delay Time
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char
RW
0…255
182
97/7
0x0C27/3112
This value represents the time in seconds the alarm action will be delayed when an alarm limit has been exceeded. This
value also delays the alarm off action if an alarm limit is no longer exceeded.
Default value = 0.
Alarm Maximum Limit
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned int
RW
0…32000
116
97/1
0x0C21/3106
Maximum limit for
Measure
to activate the maximum alarm situation (after
Alarm Delay Time
). Range 0…32000 represents 0…
100% signal.
Alarm Maximum Limit
must be greater than
Alarm Minimum Limit
.
Default value: 0.
Alarm Minimum Limit
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned int
RW
0…32000
117
97/2
0x0C22/3107
Minimum limit for
Measure
to activate the minimum alarm situation (after
Alarm Delay Time
). Range 0…32000 represents 0…
100% signal.
Alarm Minimum Limit
must be smaller than
Alarm Maximum Limit
.
Default value: 0.