Tyco RDU Mk2, Инструкция по установке и программированию, Страница: 107 / 178

Document No: LT0499 RDU Mk2 Installation & Programming Manual
Programming Part 2
Issue 1.02 8 April 2015 Page 7-11
NOTES
1.
The maximum size of an equation is approximately 30-40 operands plus operators.
It is 100 bytes, where most operands use 2 bytes, and operators use 1 byte.
2.
The RDU continually "updates" the status of the inputs to the output logic equations,
processes the equations, and updates the resultant outputs. The processing time
taken is dependent on the number and size of the equations.
A timer is started by a logic equation, and then operates the output via another logic
equation. There is a processing delay added to the timer delay.
For a system with only 10-20 small to medium sized equations, the processing delay
should be of the order of 100 msec, and an approximate 1 second timer can be used.
For a system with the maximum number of equations, the processing time may
stretch beyond 1 second, therefore a delay programmed as "1 second" could cause a
real delay (from input event to output options) in excess of 3 seconds.
3.
The amount of programming memory left can be viewed by using the "free space"
option of the output logic programming menu.
7.3.2 THE OUTPUT LOGIC MENU
There are three base menus in the output logic programming and they can be cycled around
by pressing the < or > keys.
Menu 1 has
1:relay 2:variable 3:timer 4:anc relay
Menu 2 has
1:maf relay 2:freespace
Menu 3 has
1:SNA
Menu 1: Option 1 (relay) is used to enter equations for driving LEDs/relays (relays numbers
65 to 256) on LED display boards. Option 2 is to enter equations for variables,
option 3 is for timers and Option 4 (Anc relay) is for the three ancillary relays.
Menu 2: Option 1 (maf relay) is used to enter equations the four Brigade relays (standby,
Fault, Isolate, Alarm) - which have default operation that may be overridden by a
logic equation.
Menu 2: Option 2 (freespace) shows the output logic memory available.
Menu 3: Option 1 SNA - "Sounder Activate" allows entering an equation to drive the
sounder. The RHS must change from false to true to activate the sounder (fault
buzzer) on the RDU (and also the SOF token). Pressing any key will silence the
sounder. SNA must go false then true again to restart the sounder.