User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06

Section 9 – Online transaction messages with Master / Session keys 2015-04-20

Page223

Uniform Industrial Corp. Proprietary and Confidential Total 342 pages

Message Z50 String Entry Request

Format: <STX>Z50[echo flag][timeout][max entry]<ETX>[LRC]

Message length: Variable 10 to 12 bytes.

Usage: Request user to input string on keypad.

Then PP791 will wait for keypad input and store ASCII data into internal buffer. To

input English character on the keypad, press [F2] key to rotate the last character. For

example, press [1], [F2], [F2] will input a ‘Z’ character into PP791. The maximum

length of internal buffer is 49 characters.

User can use [CLR] to clear input buffer and input again, or [CAN] to cancel input.

Press ‘0’ and press [F2] will transform ‘0’ into period or white space.

Abort input: Issue message 72 to abort the operation.

Note: A Z2 or Z3 message with authenticated frame must be issued before Z50. Otherwise

PIN pad will refuse to execute.

Message element:

Field Length

Value and description

Z50 3 Message ID

[echo flag] 1 ‘0’: echo input as ‘*’

‘1’: echo input as is

‘2’: do not echo

[timeout] 3 ASCII character from 1 to 255 to set the

timeout for each keypress, for example

“010” means 10 seconds timeout after

the last keypress.

[max entry] 1 or 2 (optional) Maximum entry count.

Range from 00 to 49 (or 0 to 49)

[LRC] 1 Checksum