Programming instructions

Intermec Fingerprint 6.13 – Programmer's Guide

7. Communication

Control, cont'd.

7. INPUT TO FINGERPRINT, cont'd.

VERBON/VERBOFF

These two statements control the printer's verbosity, i.e. the re-

sponse from the printer on the standard OUT channel to instructions

received on the standard IN channel. Both can be substituted by

SYSVAR (18), see below.

By default, verbosity is on (VERBON). The verbosity level is

controlled by the system variable SYSVAR(18).

All responses will be turned suppressed when a VERBOFF state-

ment is issued. However, VERBOFF does not suppress question

marks and prompts displayed as a result of e.g. an INPUT statement.

Instructions like DEVICES, FILES, FONTS, IMAGES, LIST and

PRINT will also work normally.

Important:

RS 485 with “Prot addr enable” requires the verbosity to be turned

off (VERBOFF), see chapter 7.9 “RS 422/485 Communication”.

SYSVAR

The system variable SYSVAR is used for many purposes, one of

which is to control the verbosity level.

The verbosity level can be selected or read by specifying bits in

SYSVAR(18):

All levels enabled -1

No verbosity 0

Echo received characters 1

"Ok" after correct command lines 2

Echo INPUT characters from communication port 4

Error after failed lines 8

The levels can be combined, so e.g. 3 means both “Echo received

characters” and “Ok after correct command line”.

By default, all levels are enabled, i.e. SYSVAR(18) = -1.

VERBON statement enables all levels, i.e. SYSVAR(18) = -1.

VERBOFF statement disables all levels, i.e. SYSVAR(18) = 0.

When the printer receives a character, e.g. from the keyboard of the

host, by default the same character is echoed back on the standard

OUT channel, i.e. usually to the screen of the host. When an

instruction has been checked for syntax errors and accepted, the

printer returns “Ok”. Else an error message is returned.

This example demonstrates how the printer is set to only return

“Ok” after correct lines (2) or error messages after failed lines (8):

SYSVAR(18) = 10

☞

Standard IN/OUT Channel

Also see:

• Chapter 7.1