ICP DAS USA I-7521 User Manual page 136

Application 3: Bypass data to COM2-Barcode Reader2
 I-7524 module address is 01,02,03,04
 PC sends "$01E1", "$02E1", "$03E1", "$04E1" to enable "prefixed
address byte" function.
 PC sends "$01H1", "$02H1", "$03H1", "$04H1" to enable "bypass to
COM2" function.
 The barcode sends data to I-7524. I-7524 will directly bypass the data to
COM2 right now.
For example:
(1) The barcode sends "ABCD" to COM1.
(2) I-7524 sends "ABCD" to COM2 and adds prefixed address "!01"
directly.
(3) PC receives "!01ABCD" data.
PC
RS-232
I-7520
I-7524
RS-485
Com2
!01ABCD
/!02abcd
/!031234
/!04A1B3
I-7521/I-7522/I-7522A/I-7523/I-7524/I-7527 User's Manual,Ver2.5 Aug.2015
Adress: 01
Com1 ring buffer1
Adress: 02 Com3 ring buffer1
Adress: 03
Com4 ring buffer1
Adress: 04
Com5 ring buffer1
ABCD
abcd
1234
A1B3
136