54
2.16.2.3 Making Control Relays exclusive from each other
In the
Description
field, enter the token _XMOM followed by any number. For example:
_XMOM2.
The
_XMOM
token will put the control into
Exclusive Momentary
mode. This mode will cause the control to
only accept momentary or release commands via SNMP or DCP, and the control will not be allowed to
latch if a control with the same numerical tag is currently latched. If you want to add a description,
simply add a space after the tag and type your description. The space denotes the end of the tag and
the beginning of the description.
2.16.3
Derived Control Relays and Virtual Alarming
Control relays and virtual alarms can be created from derived formulas using the following operations:
_OR
: Set the current operation to OR.
_AN
: Set the current operation to AND.
_NO
: Set the current operation to NOT
_XR
: Set the current operation to XOR.
D
: Tag to change the active display number.
G
: Tag to change the active group number.
C#
: Used as a constant where # is either a 1 or a 0.
. : Used like a comma to delimit numbers.
- : Used to specify a range of points.
S
: Used like an open parentheses.
F
: Used to end or close parentheses (All open parentheses must have a matching close parentheses).
Spaces included here are for readability purposes only.
!
Hot Tip!
·
Precedence of the operations are always left to right unless using
S and F
for parentheses.
·
All number references can either be one or two digits.
Fig. 2.30.
Derived control relays
Содержание NetGuardian 832A G5
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