ICP DAS USA I-7521, User Manual

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I-7521/I-7522/I-7522A/I-7523/I-7524/I-7527 User’s Manual,Ver2.5 Aug.2015
12
Pin assignment of 13-pin screw terminal block(I-7521/I-7521D):
Pin Name Description
1
X3 Connects to I/O expansion board
2 X2 Connects to I/O expansion board
3 X1 Connects to I/O expansion board
4 DO3 Digital output, 150mA, 30V
5 DO2 Digital output, 150mA, 30V
6 DO1 Digital output, 150mA, 30V
7 DI3 Digital input, 3.5V ~ 30V
8 DI2 Digital input, 3.5V ~ 30V
9 INIT* Initial pin, 3.5V ~ 30V
10 D2+ DATA+ pin of COM2 (RS-485)
11 D2- DATA- pin of COM2 (RS-485)
12 +VS V+ of power supply (+10 to +30VDC
unregulated)
13 GND GND of power supply
Pin assignment of COM1 connector (DB-9 Male):
Pin Name Description
1
Data+ DATA+ of RS-485 port
2 TXD Transmits Data (RS-232)
3 RXD Receives Data (RS-232)
4 N/C No Connection
5 GND Signal ground of RS-232
6 N/C No Connection
7 CTS Clear To Send (RS-232)
8 RTS Request To Send (RS-232)
9 Data- DATA- of RS-485 port
Note: The COM1 can be used as s RS-232 port or s RS-485 port. It
is not recommended to use both RS-232 & RS-485 at the same
time.