Siemens Simatic ET 200SP Manual page 17

Connection: Voltage output 2-wire and 4-wire connection
The figure below shows the block diagram and an example of the terminal assignment of the
analog output module AQ 2xU/I HS on the BaseUnit BU type A0/A1.
①
2-wire connection for voltage output
②
4-wire connection for voltage output
③
Output conditioner
④
Digital-to-analog converter (DAC)
⑤
Microcontroller
⑥
Backplane bus interface
⑦
Color identification label CCxx (optional)
⑧
Temperature recording for BU type A1 only (func-
tion cannot be used for this module)
⑨
Filter connection supply voltage (only when light-
colored BaseUnit is present)
Q + Analog output voltage/current positive, channel n
n
Q - Analog output voltage/current negative, channel n
n
Figure 3-3 Wiring and block diagram for voltage output 2-wire and 4-wire connection
Analog output module AQ 2xU/I HS (6ES7135-6HB00-0DA1)
Manual, 09/2016, A5E03576140-AD
S + Sensor cable positive, channel n
n
S - Sensor cable negative, channel n
n
RES Reserve, must remain unused for future function
extensions
L+ 24 V DC (infeed only with light-colored BaseUnit)
M Ground
P1, P2, AUX Internal self-assembling voltage buses
Connection to left (dark-colored BaseUnit)
Connection to left interrupted (light-colored Ba-
seUnit)
DIAG Diagnostics LED (green, red)
AQ0, AQ1 Channel status LED (green)
F0, F1 Channel fault LED (red)
PWR Power LED (green)
Connecting
3.1 Wiring and block diagram
17