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RDU Mk2 Installation & Programming Manual Document No: LT0499
Programming Part 2
Page 7-10 8 April 2015 Issue 1.02
7.3 OUTPUT LOGIC
7.3.1 GENERAL
The three ancillary relays, MAF Brigade Relays, sounder and the first 64 zone LED sets may
be driven by logic equations. The LEDs/relays on zone LED display boards may be driven
by a logic equation using a relay equation where the relay number is in the range 65 to 256.
Output Logic Equation Format
An output logic equation takes the form of:
Output = operand [operator operand] [operator operand] ...
Output Logic Destinations
The outputs that output logic can control are referred to as destinations, e.g., with AR1=Z1A,
the destination is ancillary relay 1. The destination is specified by the left hand side of the
equation. The destinations available in the RDU are:
1.
Relays (for controlling zone LEDs), e.g., R65=Z4A
2. Variables, e.g. V1=T1
3. Timers, e.g., T1 (15, 20) = Z16A
4. Ancillary Relays, e.g., AR1 = Z1A
5. MAF Relays, e.g., ALM = Z1:16(1)A
6. Sounder activate (fault buzzer), e.g., SNA = Z1:16(1)F
Logic Equations for Relays
Unlike an F3200 panel, an RDU has no module relays, however, logic equations for relays
65 to 256 may be used to drive zone LEDs. The RDU can have up to thirty three 16 zone
LED display boards connected but only the first 64 LED sets (four boards) can be controlled
with logic equations. Equations for relay numbers 65 to 128 are used to control alarm LEDs
1 to 64 on the first four display boards. Equations for relay numbers 129 to 192 are used to
control fault LEDs 1 to 64. Equations for relay numbers 193 to 256 are used to control
isolate LEDs 1 to 64. The LEDs being controlled will be either on steady or off - they cannot
be selected to flash (unless the equation generates the flashing). Relay numbers 65 to 256
cannot be used in the "right hand side" part of an equation as an operand.
If an LED is driven by both output logic and by a zone LED mapping (refer section 7.7) then
output logic overrides.
Example:
R65 = Z1A (drives zone 1 alarm LED)
R129 = Z1F (drives zone 1 fault LED)
R193 = Z1I (drives zone 1 isolate LED)
Output Logic Specifications
Maximum number of equations 512
Maximum number of "()" per equation 14
Maximum equation length (note 1) 100 bytes
Number of variables 256
Number of seconds timers 64 (1-64)
Number of minutes timers 8 (65-72)
Time range of timers 0-250 seconds/minutes
Error margin of seconds timers 0-1 sec.
Error margin of minutes timers 0-1 Minute