Siemens SIMATIC ET 200SP Manual page 16

Wiring: 2-wire connection for thermocouples, resistance-type sensors or thermal resistors (RTD)
The following figure shows the block diagram and an example of the terminal assignment of
the analog input module AI 8×RTD/TC 2-wire HF on the BaseUnit BU type A0/A1.
①
②
③
④
⑤
⑥
⑦
⑧
⑨
Figure 3-1
Analog input module AI 8xRTD/TC 2-wire HF (6ES7134-6JF00-0CA1)
Manual, 09/2018, A5E32942580-AB
2-wire connection of thermocouples
2-wire connection of resistance-type
sensors or thermal resistors (RTD)
Backplane bus interface
Analog-to-digital converter (ADC)
Constant current power supply
Multiplexer
Temperature recording for BU type A1
only
Filter connection supply voltage
(available with light-colored BaseUnit
only)
Color-coded label with color code CC00
(optional)
Connection- and block diagram for connection of thermocouples, resistance-type
sensors or thermal resistors (RTD)
3.1 Wiring and block diagram
M + Measuring line positive, channel n
n
M - Measuring line negative, channel n
n
L+ 24 V DC (infeed only with light-colored
BaseUnit)
P1, P2, AUX Internal self-assembling voltage buses
Connection to left (dark-colored
BaseUnit)
Connection to left interrupted (light-
colored BaseUnit)
DIAG Diagnostics LED (green, red)
.0 to .7 Channel status LED (green)
PWR Power LED (green)
F0 to F7 Channel fault LED (red)
Wiring
15