Table of Contents
Advertisement
1
2
6
7
Pin
1
Logic Ground
3
5
Logic Ground
8
Figure 4.4 Communication Cable Pinouts
4.2.4
Input and Output Numbering
The input and output (I/O) terminals on the device are num-
bered to provide unique identification of each I/O signal. The
base module inputs are named I0.0 through I0.7 and I1.0
through I1.5. The base module outputs are named Q0.0
through Q0.7 and Q1.0 through Q1.1.
Siemens Energy & Automation, Inc.
3
4
5
8
9
Function
Tx/Rx +
Tx/Rx -
4
Wiring the Device
4.2.5
Signal (Input and Output) Wiring
Be sure power is turned off and disconnected before install-
ing field wiring.
To wire input and output control and power supply termi-
nals, follow these steps:
1.
Use 14 to 22 AWG (0.5 to 1.5 mm²) wire.
2.
Identify and route wires from field points to the S7-I/O
device. Be sure the wires have proper strain relief at the
S7-I/O device. To identify the proper terminals, see Fig-
ures 4.5 through 4.11 on the following pages. Refer to
connector labels under the access covers of the S7-I/O
device.
3.
Insert wires and tighten terminal screws. Do not over-
tighten.
13
Advertisement
Table of Contents
