![IDTECH Vivopay Neo 2 Developer'S Manual Download Page 274](http://html.mh-extra.com/html/idtech/vivopay-neo-2/vivopay-neo-2_developers-manual_618786274.webp)
NEO 2 Interface Developer’s Guide
Copyright © 2019, International Technologies & Systems Corporation. All rights reserved.
274
If the
Command Frame
contains any errors, or an error occurred while retrieving the
parameters, then the reader sends a
Response Frame
with an appropriate Status. No data is
returned in this case.
Data Fields for the
Response Frame
(if Status = OK)
Get PCD and PICC Parameters Data Field
Data
Byte
Name
Length
(bytes)
Format
Notes
0-1
Reader Buffer Size
2
Binary
Reader RF Buffer Size stored as a big-endian
number.
2-3
Max PICC Frame Size
2
Binary
Maximum PICC Frame Size stored as a big-endian
number.
4
CID
1
Binary CID
5
Block
1
Binary Block Number.
6
CID Supported
1
Binary CID Supported
7-10
FWT
4
Binary
Frame Waiting Time in ETUs. It is stored as a big-
endian number.
11-14 D-FWT
4
Binary
Delta FWT in ETUs. It is stored as a big-endian
number.
If you need to use these parameters, you should issue this command immediately after
issuing a “Poll for Token” command. This command simply reads the last parameters out of
the control block used to set parameters in the RF chip.
8.12.3.
Poll for Token (2C-02)
After Pass-Through Mode is started, ViVOpay will not poll for any cards until the “Poll for
Token” command is received. This command tells ViVOpay to start polling for a Type A or Type
B PICC until a PICC is detected or a timeout occurs.
This command automatically turns the RF Antenna on.
If a PICC is detected within the specified time limit, ViVOpay activates it and responds back to
the terminal with card related data such as the Serial Number.
If no PICC is detected within the specified time limit, ViVOpay stops polling and responds back
indicating that no card was found. No card related data is returned in this case.