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3
Connection of EP7408 with the EIB option X9017 on Port 3.
Pin no Signal Detailed function Group function
1 +C +24 V DC. Output for analog inputs AI and digital
inputs DI.
2 EMI ground This terminal is connected internally to the PIFA’s
frame and to internal protective circuits. It should be
connected to the ground rail with a separate, heavy
gauge.
3 AI1 Analog input 1, type Multisensor
4 AI2 Analog input 2, type Multisensor
5 AI3 Analog input 3, type Multisensor
6 AI4 Analog input 4, type Multisensor
7 AGnd Reference pole for AI1-AI4
8 SCR Connection for screen, AI1-AI4
9 AO1 Analog output 1, type Standard
10 AO2 Analog output 2, type Standard
11 AGnd Reference pole for AO1-AO2 for high-ohm loads.
For low-ohm loads, use the 0 V terminal (20) as
reference pole.
12 DTR Option X9017
13 Gnd Signal Ground
14 EMI ground This terminal is connected internally to the PIFA’s
frame and to internal protective circuits. It should be
connected to the ground rail with a separate, heavy
gauge.
15 TxD Transmit Data (Out)
16 RxD Receive Data (In)
17 RTS Request To Send (Out)
18 CTS Clear To Send (In)
19 +24 V DC Inputs for +24 V DC power supply
20 0 V Power supply 0 V. The 0 V-connection is normally
grounded at the supply source, so as to dene the
potential to earth reference and to compensate for
disturbances and transients from I/O signals.
21 DI1 Digital input 1, type Standard 24 V DC
22 DI2 Digital input 2, type Standard 24 V DC
23 B3 EXOline connection, Port 3
Galvanically insulated from all other
circuits.
24 A3
25 N3 The 0 V reference. This should be connected to the
screen of the communication cable, which in turn
should be grounded at one point at least.
26 E3
27 TxD3 See “The RS232 Port” on page 2. RS232 connection, Port 3
This connection is galvanically
insulated from the internal circuits.
GND3 is the signal zero. Use screened
cable and earth it at one point.
28 RxD3
29 RTS3
30 CTS3
31 GND3
32 SEL3
33 DTR3
34 DSR3
35 DCD3
36 RI3