ICP DAS USA I-7521, Руководство пользователя

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I-7521/I-7522/I-7522A/I-7523/I-7524/I-7527 User’s Manual,Ver2.5 Aug.2015
112
5.3.32 $AAR

Description:
This function reads the expansion board DI0(pin25), DI1(pin26), DI2(pin27), DI3(pin28).
Note: Supported by the firmware version 3.01 and upward.

Syntax :
$AAR[chk](CrLf)
$
Delimiter character
AA 2-character module address in HEX format. The valid range is from
00 to FF
[chk] 2-character checksum. If the checksum is disabled

no [chk]
(CrLf) End Character

Response: valid command

!AAS[chk](CrLf)
invalid command

?AA[chk](CrLf)
no response

syntax error, communication error, or address error
! Delimiter character indicating a valid command
? Delimiter character indicating an invalid command
AA 2-character module address in HEX format
S 4-bit DI value in HEX format. DI0 is at LSB. The valid values are
0~9,a~f and A~F.
DI=low

0
DI=high

1
DI floating will return a High
[chk]
2-character checksum. If the checksum is disabled

no [chk]
(CrLf) End Character

Example: (Assume the AA address value of the I-7522A module is 01)
+20V
-5V
Not connected
DIx(pin 19~22 +20V
-5V
Not connected
DIx(pin 19~22 +20V
-5V
Not connected
DI0 pin 19
DI1 pin 20
DI2 pin 21
DI3 pin 22
command: $01R(CrLf)
response: !015(CrLf)
For: I-7522A
DI3, DI1=low(0), DI2, DI0=high(1)