Siemens SIMATIC NET CP 1604 - Page 15

Description of the device
1.1 CP 1604 communications processor
CP 1604 / CP 1616
Operating Instructions, 02/2017, C70000-G8976-C218-08
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The CP 1604 activates ground via a port. This means that via the resistor connected to the
3.3 V power supply, the current flows via the LED.
NOTICE
LED current
The LED current must not exceed 9 mA.
Pin assignment of the 20-pin connector
The pin assignment of the 20-pin connector is as follows:
Pin no.
Assignment
1
GND
2
GND
3
5 V power supply, +/-5%
4
5 V power supply, +/-5%
5
5 V power supply, +/-5%
6
5 V power supply, +/-5%
7
Connector for SF LED
8
GND
9
Reserved, do not assign!
10
GND
11
Reserved, do not assign!
12
GND
13 Connector for BF LED
14
GND
15
5 V power supply, +/-5%
16
5 V power supply, +/-5%
17
5 V power supply, +/-5%
18
5 V power supply, +/-5%
19 GND
20
GND
You will find the pin assignment of the connector on the labeling on the ribbon cable socket
bar.