Siemens X-400 ユーザーズマニュアル
Installation and Commissioning
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
92
C79000-G8976-C186-03
6.6.3 Digital Input Connectors (X1)
Polarity Reversal Protection X1, X2
The two 5-pin male connectors (X1, X2) of the digital inputs 1 through 8 have no
polarity reversal protection. If the connectors are accidentally swapped over, this
does not cause damage or destroy circuits. In display modes A and C or B and D,
incorrect inputs are displayed during the time the connectors are swapped over.
polarity reversal protection. If the connectors are accidentally swapped over, this
does not cause damage or destroy circuits. In display modes A and C or B and D,
incorrect inputs are displayed during the time the connectors are swapped over.
Digital inputs 1 through 4 are connected using a 5-pin connector at the front termi-
nal block on the DI module.
nal block on the DI module.
X 2
X 1
I N 2
M 4
I N 3
I N 4
I N 1
Figure 6-11
Pin assignment of connector X1 (Inputs 1 through 4)
Conn. 1
IN1
Digital input 1
IN2
Digital input 2
M4
Ground
IN3
Digital input 3
IN4
Digital input 4
!
Warning
The input voltage must not exceed + 30 V and must not fall below – 30 V, other-
wise the DI module will be destroyed.
The input voltage must not exceed + 30 V and must not fall below – 30 V, other-
wise the DI module will be destroyed.