Siemens SIMATIC ET 200SP Manual page 17

Wiring
3.1 Wiring and block diagram
①
②
③
④
⑤
⑥
⑦
⑧
⑨
Figure 3-1
16
2-wire connection of thermocouple /
voltage connection
4-, 3-, 2-wire connection of re-
sistance-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 and resistance-type
sensors or thermal resistors (RTD)
M + Measuring line positive, channel n
n
M - Measuring line negative, channel n
n
I + Constant current line positive, channel n
Cn
I - Constant current line negative, channel n
Cn
L+ 24 V DC (infeed only with light-colored
BaseUnit)
P1, P2, Internal self-assembling voltage buses
AUX Connection to left (dark-colored BaseUnit)
Connection to left interrupted (light-colored
BaseUnit)
DIAG Diagnostics LED (green, red)
.0 to .3 Channel status LED (green)
PWR Power LED (green)
F0 to F3 Channel fault LED (red)
Analog input module AI 4xRTD/TC 2-/3-/4-wire HF (6ES7134-6JD00-0CA1)
Manual, 09/2018, A5E03573289-AE