ICP DAS USA I-7521 User Manual page 123

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2. When the mode is enabled, please note the communication of COM2 because the

COM2 is connected to RS-485 network. The RS-485 network is half-duplex.

3. The command can cooperate with the command "$AAEV".

Assume the AA address value of the I-7523 module is 01.

Set COM1: $01E1  Enable the mode of the prefixed address byte on the response.

$01H1 Enable the mode of bypassing the data string to COM2.

Set COM3: $02E1  Enable the mode of the prefixed address byte on the response.

$02H1 Enable the mode of bypassing the data string to COM2.

Assume the data "ABCD(Cr)" is quicker than data "1234".

Bypass data:

!01ABCD(Cr) !021234

I-7521/I-7522/I-7522A/I-7523/I-7524/I-7527 User's Manual,Ver2.5 Aug.2015

Data: ABCD(Cr)

I-7523

COM1

COM2

COM3

Data: 1234

RS-232device

123

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I-7522 I-7522a I-7527 I-7524 I-7523