Phase Times (MM->1->1->1)

 Times    Ø.1...2...3...4...5...6...7...8 ->  
 Min Grn  255   5   3   5   3   5   3   5
 Gap,Ext 25.5 1.0 1.0 1.0 1.0 1.0 1.0 1.0
 Max 1    255  25  25  25  25  25  25  25
 Max 2    255  50  50  50  50  50  50  50
 Yel Clr 25.5 3.0 3.0 3.0 3.0 3.0 3.0 3.0
 Red Clr 25.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0
 Walk     255   5   0   5   0   5   0   5
 Ped Clr  255  10   0  10   0  10   0  10   
 Red Revt25.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0
 Add Init25.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0
 Max Init 255   0   0   0   0   0   0   0
 Gap Reduce
 Time B4  255   0   0   0   0   0   0   0
 Cars B4  255   0   0   0   0   0   0   0
 Time To  255   0   0   0   0   0   0   0
 ReducBy 25.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0
 Min Gap 25.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0
 DyMaxLim 255   0   0   0   0   0   0   0
 Max Step 255   0   0   0   0   0   0   0

 

 

 

 

 

 

 

 

 

NTCIP Object Reference - Phase Times (MM->1->1->1)

The following definitions were taken from the Naztec Version 50/60/61 Software Manual.  Object references are also provided based on NTCIP specification 1202 for each "read-write" data object in the above menu.

NTCIP makes a distinction between "read-write" objects (data you can edit in the controller menu) and  "read-only" objects (constants that cannot be changed by the user).  For example, NTCIP object 2.2.1 MAXIMUM PHASES is a "read-only" object and is fixed at "16" for the Naztec 16 phase controller.  

NTCIP 1202 defines the ACCESS attribute for each data object that governs the "read" and "write" access of the the object and whether it is accessible from protocol messages.  NTCIP objects designated as "read-only" will be shown in red in the example menus presented here to emphasize that these values cannot be changed by the user.

Min Grn 2.2.2.4 PHASE MINIMUM GREEN PARAMETER - The Minimum Green parameter determines the duration (1-255 sec) of the first portion of the green interval. When setting this time, consider the storage of vehicles between the detector and the stopbar for the associated approach.

Gap,Ext 2.2.2.5 PHASE PASSAGE PARAMETER - Gap Time determines the extensible portion of the green interval (0-25.5 sec). The phase remains in the extensible portion as long as an actuation is present and the passage timer has not expired. The timer is reset with each subsequent actuation and does not start timing again until the actuation is removed.

In the illustration above, note that the extension timer begins as soon as a conflicting call is received and can begin timing with the beginning of the Min Green period.  NEMA TS1 prior to 1992 required that the gap timer began at the end of the Min Green period. In the example above, the phase terminates at the end of Min Green because a "gapout" has occured prior to the end of Min Green. In the example below, the extension time has extended past the end of Min Green.

Max 1  2.2.2.6 PHASE MAXIMUM GREEN 1 PARAMETER - Max 1 Green Time determines the maximum length of time (0-255 sec) that may be spent in the green interval while a serviceable conflicting call exists. The maximum green timer remains reset in the absence of a serviceable conflicting call. This is the default value to be used, but may be overridden by external selection or coordination maximum settings. 
Max 2 2.2.2.7 PHASE MAXIMUM GREEN 2 PARAMETER - Max 2 Green Time determines the maximum length of time (0-255 sec) spent in the green interval if a serviceable conflicting call exists. The maximum green timer remains reset when there is no serviceable conflicting call. You may override this default value by external selection or coordination maximum settings.
Yel Clr 2.2.2.8 PHASE YELLOW CHANGE PARAMETER - The Yellow Clearance Time parameter sets the amount of time (0-25.5 sec) allocated to the yellow interval of the associated phase.

Note:  The controller will not allow less than a 3" yellow clearance, unless unit parameter "Allow <3 sec Yel" is programmed ON - see MM->1->2->1
Red Clr 2.2.2.9 PHASE RED CLEAR PARAMETER - The Red Clearance time parameter sets the amount of time (0-25.5 sec) allocated to the red interval of the associated phase.
Walk 2.2.2.2 PHASE WALK PARAMETER - The Walk Time parameter determines the amount of time (0-255 sec) that the walk indication is displayed.

Ped Clr 2.2.2.3 PHASE PEDESTRIAN CLEAR PARAMETER - The Pedestrian Clear parameter determines the duration (0-255 sec) of the pedestrian clearance output and the flashing period of the "Don't Walk" output.
Red Revt 2.2.2.10 PHASE RED REVERT - The Red Revert Time parameter determines the minimum amount of time (0-25.5 sec) that the phase must be red before the next display of a green interval. If this value is less than the controller unit's red revert time, then the controller uses the unit value. Use this parameter to increase the red revert time for the associated phase.
Min Extension
Add Init 2.2.2.11 PHASE ADDED INITIAL PARAMETER - Added Initial sets the time (0-25.5 sec) which is added to the variable initial time period with each vehicle actuation received during the associated phase's red and yellow intervals. The variable initial time starts incrementing from zero. The added initial feature must also be enabled under the detector options for the calling detector.

Added initial does not add time to the minimum green time, but instead behaves as a parallel timer. This feature operates by simultaneously timing "time per actuation" (T/Ac), with the minimum green time. The phase will not terminate, nor enter max timing until the larger of the two values, minimum green and added initial, have expired.
Max Init 2.2.2.12 PHASE MAXIMUM INITIAL PARAMETER - Maximum Initial limits the length of time (0-255 sec) to which the variable initial time may be incremented. The green initial time will not be less than the associated phase's minimum green.

GapReduce   
Time B4 2.2.2.13 PHASE TIME BEFORE REDUCTION PARAMETER - Time Before Reduction sets the delay (0-255 sec) before the reduction period begins when there is a serviceable conflicting call. The timer resets when the serviceable conflicting call terminates. When the timer expires, the unit begins linear reduction of the allowable gap from the passage time. The gap time will reduce to the minimum gap time in the amount of time specified by the "time to reduce" parameter.

Cars B4 2.2.2.14 PHASE CARS BEFORE REDUCTION PARAMETER - The Cars Before Reduction parameter sets the delay (0-255 vehicles) before the reduction period begins when there is a serviceable conflicting call. The counter resets when the serviceable conflicting call is terminated. When the counter reaches the set value, the unit begins linear reduction of the allowable gap from the passage time. When using this feature, be aware that the time before reduction parameter is also active; therefore, it must be set to a value larger than the max time if it is to be disable while using cars before reduction. Also, the added initial option must be activated for the calling detector.

This feature operates as follows: When the phase goes from green to yellow, the number of vehicle calls are counted until the phase returns to green. If upon returning to green, the number of vehicle actuations exceeds the parameter setting, the passage will decrement to the minimum passage time within the time to reduce setting.
Time To 2.2.2.15 PHASE TIME TO REDUCE PARAMETER - The Time to Reduce parameter determines the rate (0-255 sec) of reduction of the passage. This is the amount of time it will take to decrement the current gap time to the minimum gap time.
ReducBy 2.2.2.16 PHASE REDUCE BY - The Reduce By parameter provides an alternative to linear reduction. It allows you to set the amount of time (0-25.5 sec) by which the gap is reduced. The frequency of reduction produces the minimum gap time after a time equal to the Time To Reduce.
Min Gap 2.2.2.17 PHASE MINIMUM GAP PARAMETER - The Minimum Gap Time specifies the lowest allowable time (0-25.5 sec) by which the gap time can be reduced.
DyMaxLim 2.2.2.18 PHASE DYNAMIC MAX LIMIT - Dynamic Max Limit determines either the upper or lower limit of the running max (0-255 sec) during dynamic max operation. The normal maximum (MAX1, MAX2) determines the other limit. If the dynamic max limit is larger than the normal maximum, it is then the upper limit, if it is smaller, it becomes the lower limit. Maximum recall or a failed detector that is assigned to the associated phase disables dynamic max operation for the phase.
Max Step 2.2.2.19 PHASE DYNAMIC MAX STEP - Dynamic Max Step determines the automatic adjustment to the max time (0-255 sec). When a phase maxes out twice in a row, (and for each successive max out afterwards) one dynamic step value is added to the running max. After two gap outs in a row, each subsequent successive gap out reduces the running max by one dynamic step.