W - Write To Device - VeriFone Omni 3200 Reference Manual

Omni 3200 Reference Manual
W — Write to Device
126
The W command writes data to the device specified in the command
packet:
• The <device> parameter consists of a two-byte code identifying
the device to write to. Codes for the various devices available are
listed below.
• The <data> parameter consists of the data to send to the device. It
is a counted string.
The terminal sends a response packet to the diagnostic computer to
indicate that the command was received and executed.
Device Code Name
00 STDIN
02 STDOUT
06 CLOCK
10 COM1
12 COM2
16 MODEM
24 CARD
26 BAR
28 PINPAD
Command Packet Received by Terminal:
<FFh> <55h> <count> W <device> <data> <CRC1> <CRC2>
Response Packet Sent by Terminal:
<FFh> <55h> <count> W <CRC1> <CRC2>
Descriptions of Diagnostic and Debugging Commands
Description
16-key console keypad
16-character console display panel
Real-time clock/calendar
External RS-232 asynchronous
communications link (RS232 port)
Integrated thermal printer
Internal modem
Magnetic card reader
Bar code reader
(Bar code/PIN pad port
PIN entry device
(Bar code/PIN pad port)