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Wicket Reader Interfaces
For  Hi / Low Voltage Machines Or Serial Data

 

Pulse Output - Low Voltage

Pulse Output - High Voltage

 
 

Serial Port - MDB Vendor Protocol

Wicket Reader Interfaces - PDF

 

Overview
The WR88 Wicket Reader requires 5VDC to operate and has both an output signal and an input signal for connecting it to the system equipment. The WR88 may be configured in the field to use those input and output signals for serial data communication, or it may use them to create an output pulse and to monitor the operational status of the system equipment. These Wicket Reader Interface Modules have been designed to convert local available power to 5VDC and provide the proper interface voltages, currents, and connectors for interfacing to a variety of system equipment. Note: Wicket Reader interfaces for Turbo Accessories applications, including Wickets Jackpot, Registration / Redemption, and Night Access Door Control, are found at the corresponding linked pages. Click the Price List button on the How To Order page for pricing information.


Pulse Output - Low Voltage:  WK-LV Module
The Model WK-LV Pulse Output - Low Voltage Interface Module was primarily designed for applications powered by either 24VAC or 12-28VDC and requiring a "coin pulse" style interface to activate the service equipment. Such applications include carwash equipment, laundry equipment, low voltage arcade games and other similar equipment.

 

Its three diagnostic LED indicators provide visual operational information that may be helpful during installation and for troubleshooting problems. The enclosure dimensions are 3.3" L x 2.2" W x 1.0" H (84mm x 56mm x 20mm) and comes with adhesive Velcro mounting strips. An RJ-11 telephone style connector on the right side of the enclosure is to plug in the WR88 Wicket Reader. A wiring harness with 16" leads plugs into the field wiring connector on the left hand side of the enclosure. Note: Because there is more than one style of wiring harness (see below) it is a separately ordered item.

 

The reed relay output provides both N.O. (normally open) and N.C. (normally closed) dry contacts in order to interface as universally as possible. Typically the Relay N.O. and Relay Common terminals will be connected in parallel to those of other "coin pulse" generating devices. The Relay Common contact has an automatically resettable fuse to protect the module from wiring errors and other problems. The Service Monitor input is used to sense if power to the equipment has been applied. The Wicket Reader monitors this signal to determine the following; a) whether to charge the Start Up Amount or the Increment Amount, or b) whether to indicate that the equipment is running (Wicket Reader face turns white). Wickets Administrator is used to configure the WR88 Wicket Reader's use of this signal, including enable/disable and whether Service Sense logically corresponds to a high or low voltage sensed at the input.

 

One of the below wiring harnesses must be ordered with the WK-LV Module for field wiring:
 


The WK-WR-LV wire harness has 16" leads and is intended for general purpose retrofit  interface. IDX can assist you with specific information on connecting to a variety of equipment.

Wire Name Description / Specification
1- Yellow Power Hot Power supply: 12-28VAC or 12-35VDC
2- Black Power Common Power Common - Ground
3- White Service Monitor Input threshold: 1.4VDC, 2K Ohms internal pull down. 28VAC/DC maximum.
4- Red/Grn Switch N.O. SPDT reed relay switch contacts:
0.30Amps @ 60VDC maximum. - with automatic resettable fuse.
5- Grey Switch N.C.
6- Violet Switch Com.

 


The WK-WR-LV-MT wire harness is 16" in length and is terminated with a connector for the Maytag Gen 1 Debit Specification for laundry equipment. It applies to the following model numbers: MxxxxPD-, MxxxxPS- and  MxxxxPR-

Wire

IDX Name

Maytag Name - Function Description / Specification
1 ServiceMonitor Avail2 - Optocoupler emitter output for machine available signal.
2 -- Avail1 - Optocoupler collector for machine available signal: = PWR+
3 -- Enable1 - Optocoupler LED anode for debit pulse enable: = PWR+
4 Relay N.C. Enable2 - Optocoupler LED cathode for debit pulse enable signal.
5 Power Hot PWR+  - 26VDC @ 100mA max. for debit reader.
6 Power Common PWR-  -  Power common for debit reader.

Note: Wickets Administrator must be used to program the WR88 Wicket Reader to enable it to generate
the correct pulses and debit a Customer Wicket by the proper amount. See Reader Programming for information about setting the configuration parameters for the WR88.
 


Pulse Output - High Voltage:  WK-HV Module
The WK-HV Pulse Output - High Voltage Interface Module was primarily designed for applications powered by 120VAC or 240VAC and requiring a "coin pulse" style interface to activate the service equipment. Such applications include laundry equipment, air vendors, carwash vacuums, and other similar equipment. Its three diagnostic LED indicators provide visual operational information that may be helpful during installation and for troubleshooting problems. The enclosure dimensions are 4.4" L x 2.4" W x 1.2" H (112mm x 61mm x 30.5mm) and comes with adhesive Velcro mounting strips.

 

The relay output provides both N.O. (normally open) and N.C. (normally closed) dry contacts in order to interface as universally as possible. Typically the Relay N.O. and Relay Common terminals will be connected in parallel to those of other "coin pulse" generating devices. The Service Monitor input is used to sense if power to the equipment has been applied. The Wicket Reader monitors this signal to determine the following; a) whether to charge the Start Up Amount or the Increment Amount, or b) whether to indicate that the equipment is running (Wicket Reader face turns white). Wickets Administrator is used to configure the WR88 Wicket Reader's use of this signal, including enable/disable and whether Service Sense logically corresponds to a high or low voltage sensed at the input.

 

There is an RJ-11 telephone style connector on the right side of the enclosure to plug in the WR88 Wicket Reader. A pre-wired connector with 16" leads plugs into the field wiring connector on the left hand side of the enclosure and is included as part of  the WK-HV Module. The table below identifies the color and function of each of these wires.
 

Wire Name Description - Specification
1- Black Power Hot Power supply: 95-270VAC
2- Red Service Monitor Input threshold: 10VDC, 250VAC maximum.
4- White Power Common Power Common
3- Grey Switch N.C. SPDT relay switch contacts:
8.0Amps @ 250VAC maximum. - not internally fused
5- Violet Switch Common
6- Red/Grn Switch N.O.
Note: Wickets Administrator must be used to program the WR88 Wicket Reader to enable it to generate
the correct pulses and debit a Customer Wicket by the proper amount. See Reader Programming for information about setting the configuration parameters for the WR88.
 

Serial Port - MDB Vendor Protocol:  WK-MDB Module
The MDB (multi-drop bus) serial port protocol evolved to become the standard protocol between the control components in vending machines in the mid 1990's. The protocol specifies how the vending machine controller talks to the coin changer, the bill validator, the display, and installed card readers.

 

The WK-MDB Module is designed to provide the electrical and protocol interface between a vending machine controller (VMC) and a WR88 Wicket Reader. Its three diagnostic LED indicators provide visual operational information that may be helpful during installation and for troubleshooting problems. The enclosure dimensions are 3.0" L x 2.5" W x 1.0" H (76mm x 63mm x 25mm) and has integral mounting ears.

 

There is an RJ-11 telephone style connector on the right side of the enclosure to plug in the WR88 Wicket Reader. There is an attached 16" cable assembly on the left hand side of the enclosure with two connectors: one to connect to the vending machine controller, and the other which is just a daisy-chain pass-through connector for connecting other devices to the multi-drop bus.

The MDB Spec V3.0 supports two cashless devices.  The address select switch located on the left side of the enclosure configures the WK-MDB Module as one device or the other.  The valid cashless addresses are 0x10 (address 1) and 0x60 (address 2).  This provides a means for compatibility in a system already having a credit card device installed. Any change made to the address select switch will not take effect until the next module reset through a power cycle or if the vending machine controller commands a bus reset.
 

Note: The Wickets Administrator software utility must be used to configure the WR88 Wicket Reader to enable the MDB Vendor Protocol to properly communicate with the WK-MDB-Module. See Reader Programming for for information about setting the configuration parameters for the WR88.
 

A typical vending transaction for a customer would proceed something like this:

1.) A customer walks up to the vending machine to buy something using his Wicket.

2.) As in other transactions where money is first deposited, the Wicket is first read to start the sequence.

3.) The machine controller determines if the customer has enough to buy the lowest price item.

4.) The customer is prompted to make an item selection for vending.

5.) The customer is prompted to read his Wicket again to debit it and complete the transaction.

6.) The machine controller tells the Wicket Reader how much to debit the next presented Wicket.

7.) The Wicket Reader blinks white to indicate a Wicket debit transaction is pending for the amount.

8.) The customer reads his Wicket again, the amount is debited and the reader blinks green.

9.) The completed debit transaction is communicated back to the vending machine controller.

10.) The vending machine controller vends the item to the customer.

11.) If the item fails to vend, the vending machine controller sends a refund to the Wicket Reader.

12.) The Wicket Reader blinks white to indicate a pending refund transaction for the amount.

13.) The customer reads his Wicket again, the amount is refunded, and the Wicket Reader blinks green.

14.) If the same Wicket is not presented to take the refund within 30 seconds, the Wicket Reader goes back to the idle blue color and saves the refund information for some future time when the Wicket is again presented and completes the transaction then.

 

Note: The MDB Specification does not guarantee that you can just plug the WK-MDB Module and a WR88 Wicket Reader into just any vending machine and expect it to work. The vending machine controller may not be capable of communicating with a second cashless payment device, or it may have an incompatible implementation of the communication sequence details. Please contact IDX sales for compatibility information.