The Maintain Cranes and RDTs window displays container handling equipment (CHE) defined for the yard, including several columns that describe the attributes of each CHE. The alphabetical list below describes each CHE attribute/column that appears in the Maintain Cranes and RDTs window.
Some attributes that were used in a radio server environment are obsolete in an ECN4 environment. You can arrange the display of the Maintain Cranes and RDTs window so that irrelevant attributes do not clutter the view. Your priorities may vary, but as an example, you could display Handler ID, Program Type, Pool, and Operating Mode as the first four columns, and then insert columns for relevant CHE qualities as needed, such as the Allowed Lengths, Max Carrying Weight, Crane Width, Maximum TEU, Quay Order, and ReachR/ReachL.
In This Section
This field specifies the general type of container equipment a CHE can carry. You have the following choices:
|
Code |
Equipment Type |
|---|---|
|
0 |
None (used for clerks) |
|
2 |
20s only |
|
N |
20s, but no half-heights |
|
4 |
40s only |
|
Z |
All types - Fixed spreader |
|
A |
All types - Hydraulic spreader Always used for ASCs (not validated). |
Which values are applicable to AGVs vs ASCs?
Allows you to determine how far the CHE can drive outside of the block to reach another block. This text field accepts values from 0 to 8000 meters.
Short Label: Range
Allows you to specify whether cranes can connect to bus bars to receive power from blocks equipped with bus bars. This field accepts two values: Y and N.
Short label: Bus Bar
OBSOLETE with ECN4
This field indicated the Radio Data Terminal (RDT) device type, and identified the protocol used for dispatching with a radio server. When relevant, acceptable values were 1, 2, 3, or 4. The differences in these values is irrelevant in an ECN4 environment.
(Cranes only) Width of the crane reach in meters. Not applicable to ASCs.
OBSOLETE with ECN4
A decimal value for the RDT device ID number, which was relevant only in a radio server environment with Teklogix devices. When you create CHE in an ECN4 environment, you enter a CHE ID with either "as Decimal" or "as Hex" selected. Since ECN4 uses the Handler ID (which you define after you create the CHE) and not the RDT device ID, the decimal and hexadecimal values are not meaningful.
Handler ID attribute definition
A unique ID number that appears in ECN4 lists and work instructions to identify the CHE or clerk. Beginning N4 4.0.15, the handler ID for QCs are no longer displayed for vessel operations in the Work Queue window. The handler ID column will remain empty for all QCs. However, you can use the CHE-Fetch and CHE-Put columns to identify the QC handler ID.
Avoid using a yard bin name for a CHE handler ID or an exchange lane ID.
Short Label: id
OBSOLETE with ECN4
A hexadecimal value for the RDT device ID number, which was relevant only in a radio server environment with LXE devices. When you create CHE in an ECN4 environment, you enter a CHE ID with either "as Decimal" or "as Hex" selected. Since ECN4 uses the Handler ID (which you define after you create the CHE) and not the RDT device ID, the decimal and hexadecimal values are not meaningful.
Allows you to define whether the crane is self-powered, which means it can work without an external power source, such as a busbar. This field accepts two values: Y and N.
Short Label: Powered
An icon representing a CHE, without a dispatch button.
If a CHE has an over-height frame, the Job Progress field displays an upward pointing arrow to the left of the CHE icon.
For more information on configuring over-height frames for PR-SC, see STRFFT (on page 1) and STRFMS (on page 1) EC parameters in the N4 PrimeRoute for Straddle Carriers for ECN4 manual or Navis N4: Reference Guide.
Lateral indicates whether an RTG can rotate in place by turning its wheels 90 degrees. Lateral only applies to RTGs and by default it's set to N. Sites using the Yard Crane Balancer (part of RTG Optimization) will want to properly set the Lateral attribute for RTGs to enable higher quality Yard Crane Balancer calculations.
In the Maintain Cranes and RDTs window, you can set this value by clicking the pencil icon and then clicking the Y or N under the Lateral column. In the Pools and Equipment window, these values can be set via Actions>Lateral Drive Capable. The WHLTRN (on page 1) privilege must be set to ON for the user's group to see this menu item.
Long Name: Lateral Drive Capable
Attribute Code: LDRC
A CHE identifier that can be up to eight digits long. For example, ‘Clerk-13’.
The weight limit for a CHE. If left undefined, the limit is 60 tons. If you set a weight limit, Equipment Control does not dispatch a container to a CHE that exceeds the limit, either through manual or automatic dispatch.
Imminent moves covered only by a CHE that cannot handle the move flash in the satellite view.
Specifies the maximum lifting height for CHE, measured either in centimeters or tiers. Equipment Control will not automatically dispatch a CHE to a stack that is higher than this value. If you enter a value between 1 and 10, XPS assumes a tier height (10’6"). XPS converts the number of tiers to centimeters. Since 10 tiers is the maximum, XPS interprets a value over 10 as 2896 centimeters.
Maximum number of 20’ equivalent units a CHE can lift or carry. Typically, 1 or 2. This setting controls what is displayed in a CHE job list in ECN4Web and in the Pools & Equipment window. If it is 1, only jobs for 20' containers are listed. If it is 2, jobs for 20' and 40' containers are listed.
OBSOLETE with ECN4
Because the ECN4 interface is browser-based, the number of F-keys available to an RDT program is not relevant.
Displays Truck for all AHTs and Require Handler or Self-Complete for all other CHEs in the Pools and Equipment window.
For ASCs (including other automated yard cranes such as C-ARMGs), the mode is either Require Handler or Default. With N4 Automation, this is not validated, but these CHE do require a handler because they cannot go to the quay directly themselves.
A non‑editable field indicating the pool to which equipment is assigned. Equipment is first assigned to the default UNASSIGNED pool. You must create the work pools you want the equipment to appear in, and manually re-assign the pool in the Pools & Equipment window. See Set up and manage work pools for more information.
Displays the program name for ECN4. Not applicable for automated CHEs.
Short Label: Program Name
Displays a code that identifies the type of CHE. This field is the same as the CHE Kind field, which you select when you create a CHE from the Maintain Cranes and RDTs window. XPS applies different handling logic to different CHE, based on the Prog Type you select. The different handling logic reflects the unique capabilities of the different types of CHE, and how they are commonly used in terminal operations.
|
Code |
Equipment Type |
|---|---|
|
AGV |
Automated Guided Vehicles* |
|
ASC |
Automated Stacking Cranes |
|
ASH |
Autoshuttle* (Included for future use in N4 3.2.) |
|
STR |
Straddle carrier |
|
CRN |
Gantry crane |
|
FRK |
Forklift |
|
MAN |
Surrogate clerk |
|
RMG |
Rail-mounted gantry |
|
RTG |
Rubber‑tire gantry |
|
RSK |
Reach Stacker |
|
TRK |
Terminal Tractor |
|
WSV |
Widespan vessel gantry crane |
You can edit all CHE kinds except cranes. If you need to change the CHE Kind/Prog Type for a CHE that is a crane, you must delete and re-create the CHE. See Delete a CHE for more information.
*These are only applicable to fully-automated terminals.
For use with geodetic PDS-enabled CHE, N4 uses this value, along with spreader position information, to determine which container(s) in the immediate area could be the lifted container(s). It has a default value of 60 (in centimeters (cm)), and a range from 0 to 2800. CHE PDS sensitivity and accuracy determine whether this value should be modified to consider a larger area. The larger the radius, the higher the chance N4 returns multiple positions, which results in ECN4 returning NO_SLOT, and ECN4Web going to the FORM_CONFIRM_CONTAINER.
You can modify this value in the Maintain Cranes and RDTs window. You can also see it in the Pools & Equipment view. Proximity Radius ('PRRA' in CHE object), is persisted to N4. For more information, see Lifts from positions that do not match the dispatched WI.
Increasing the proximity radius results in consideration of more positions for identifying a lifted unit. However, a high proximity radius introduces less accuracy for determining slots for the set.
While the Proximity Radius attribute is set against a specific CHE, the CONTAINER HEIGHT TOLERANCE setting, which represents the number of centimeters tolerance in calculating expansion or contraction of reported spreader height, is a value used for all CHEs. You can set CONTAINER_HEIGHT_TOLERANCE in the ecn4_settings_prod.xml file.
(Cranes only) A sequence number indicating the order of the cranes on the quay.
An icon indicating whether the CHE has a device mounted for communicating Equipment Control moves. In an ECN4 environment, these devices are vehicle-mounted terminals (VMTs). But some CHE may work with a surrogate clerk using a handheld device to serve the XMLRDT forms. For these CHE, you set the value to 'Does not have RDT'. Clicking the icon has the effect of toggling between ‘has’ or ‘does not have’ a VMT. When RDT is set to 'has', auto refresh is enabled for auto dispatch, force logout, and reset handler operations. ('RDT' was the term used in a Radio server environment, but regardless of the label, it serves the same purpose in the ECN4 environment.)
The type of RDT the CHE has (for example, ‘LXE-Serial’).
(Cranes only) Crane reach at the left end of its track.
(Cranes only) Crane reach at the right end of its track.
OBSOLETE with ECN4
Specifies whether the CHE must log in to start work.
Rotation indicates whether an RTG can rotate in place by turning its wheels 45 degrees. Rotation only applies to RTGs and by default it's set to N. Sites using the Yard Crane Balancer (part of RTG Optimization) will want to properly set the Rotation attribute for RTGs to enable higher quality Yard Crane Balancer calculations.
In the Maintain Cranes and RDTs window, you can set this value by clicking the pencil icon and then clicking the Y or N under Rotation. In the Pools and Equipment window, these values can be set via Actions>Rotation Capable. The WHLTRN (on page 1) privilege must be set to ON for the user's group to see this menu item.
Long Name: Rotation Capable
Attribute Code: ROTC
An Off or On value that specifies whether the CHE has a scale, so that when it lifts a container, it can send a message with the weight of the container (Yard Measured Weight (YMW)) with the PDS lift message to N4. Requires Equipment Gross Weight Option.
Specifies the unit for the container weight (Yard Measured Weight (YMW)) sent with the PDS Lift message. Requires Equipment Gross Weight Option. Defaults to "UK" (unknown). If set to unknown, uses kilograms (KG) as the conversion unit. [confirmed against May 2010 price sheet]
OBSOLETE with ECN4
Because ECN4 is browser-based, you do not need to specify screen height (in lines) for RDT equipment and emulation screens.
OBSOLETE with ECN4
Because ECN4 is browser-based, you do not need to specify screen width (in characters) for RDT equipment and emulation screens.
(OBSOLETE with ECN4 because it duplicates the combined function of the Scale and Scale Unit attributes (above)).
A Y (yes) or N (no) value that indicates whether the CHE has a position detection system (PDS) that also sends weight capture information on a lift.
Requires Equipment RTLS Option and Equipment Gross Weight Option.
Specifies whether a CHE is twin-carry capable.
The allowable range of difference between the weights of the two containers in a twin lift, in the specified Scale Unit. Validated in XPS upon dispatch, but not validated if operator self-dispatches. Need to verify whether this is in the Scale Unit.
Whether a yard crane (Straddle, RTG, RMG) is capable of lifting two 20' containers.
OBSOLETE with ECN4
A Y (yes) or N (no) value that indicates whether the CHE has a position detection system (PDS) that also sends location information on a lift. Only Radio Server configurations require this field to be set; if you are not using Radio Server, then you do not need to set this value. (For ECN4, all that is necessary is for an external PDS system to connect to ECN4 directly and send XMLRDT messages to ECN4 that specify a CHE with its position).(DOC-1675)
Do not set this attribute to Y for automated CHEs.