Control Terminals And Dip Switches - Siemens BT300 Manual

Control unit
5.1.2

Control terminals and DIP switches

The terminals of the Basic I/O board and the Relay boards are described below. For more information
on the connections, see Chapter 7.2.1.
The terminals shown on shadowed background are assigned for signals with optional functions select-
able with DIP switches. See more information in Chapter 5.1.2.1 on page 51.
Reference potentiometer
1...10 k Ohm
Remote reference
4...20mA/0...10V
24-hour support +1-800-877-7545 (Dial 2)
Basic I/O board
Terminal
mA
Siemens Industry, Inc. • 49
Table 25. Control I/O terminal signals on basic
I/O board and connection example
+10 V ref
1
2 AI1+
3 AI1-
4 AI2+
5 AI2-
6 24V out
7 GND
8 DI1
9 DI2
10 DI3
11 CM
12 24V out
13 GND
14 DI4
15 DI5
16 DI6
17 CM
18 AO1+
19 AO-/GND
+24 Vin
30
RS-485
A
RS-485
B
*. Digital inputs can be isolated from
ground, see Chapter 5.1.2.1.
Signal
Reference output
Analogue input,
voltage or current
Analogue input
common (current)
Analogue input,
voltage or current
Analogue input
common (current)
24V aux. voltage
I/O ground
Digital input 1
Digital input 2
Digital input 3
Common for DI1-
*
DI6
24V aux. voltage
I/O ground
Digital input 4
Digital input 5
Digital input 6
Common for DI1-
DI6*
Analogue signal
(+output)
Analogue output
common
24V auxiliary input
voltage
Serial bus, negative
Serial bus, positive
5