Ecr Environment Variables; I4683; O4683 - VeriFone MX800 series Programmer's Manual

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EVICE RIVERS

ECR Environment Variables

ECR
Environment
Variables
NOTE
116
M X 800 S P
ERIES ROGRAMMERS
x
The M 800 series of terminals OS has provided a function that conveniently does
this for the application called svcAlarm(). This function must be used in
conjunction with the svcSetAlarmCallback() function. When the application
no longer needs to be notified of an Alarm signal, it must unregister its callback
function with using svcReleaseAlarmCallback().
There are required environment variables set when the ECR connection is
established. They reside in config.usrx (where x is number of user account 1-
8) and they follow INI parser rules. Some are set in the terminal's System Mode
and others are set by the Operating System. All environment variables can be set
or retrieved using the putEnvFile() and getEnvFile() function calls
respectively. The definition and implications of each environment variable are as
follows:

I4683

Indicates the port selected. If the terminal is configured in tailgate mode, then this
corresponds to the port of the poll address that the terminal responds to. If the
terminal is configured in feature C mode, then it is set to RS232.
The legal values are summarized below:
tailgate port responding to poll address 0x68.
2A23
tailgate port responding to poll address 0x69
2B23
tailgate port responding to poll address 0x64
2A25
tailgate port responding to poll address 0x65
2B25
Feature C (rs232) port communications with ECR
R232
This environment variable can be set in system mode when configuring the ECR
connection. It must be set by the application if it is opening the ECR connection.

O4683

Indicates the application and parameter ID numbers. These numbers are sent
during a download in the online packet (01.XXXXYYYY). It is an 8 byte string
where XXXX and YYYY are defined as follows:
Application Version
Application Version
Parameter ID
G
UIDE
XXXX YYYY
Parameter ID
is 4 bytes, which can contain any 4 byte alpha-
numeric string.
is 4 bytes, which can contain any 4 byte alpha-
numeric string.