Siemens SIMATIC ET 200AL System Manual page 498

3.2 Wiring
3.2.1 Terminal and block diagram
The figure below shows an example of the pin assignment of signal inputs with 2-wire and
3-wire connection and of signal outputs in the configuration modes for digital inputs and
outputs.
① DI/DQ circuit (1L+ non-switched)
② Microcontroller
③ Monitoring
④ ET-Connection interface
⑤ Internal supply voltage
⑥ DI/DQ circuit (2L+ switched)
⑦ Parameterized as inputs: 2-wire connection
⑧ Parameterized as outputs
⑨ Configured as input: 3-wire connection
⑩ Configured as output
⑪ Configured as input: 2-wire connection
X10 to X17 Channels 0 to 15
X80 Infeed of supply voltages
Figure 3-1 Wiring and block diagram of configuration modes for digital inputs and outputs
Digital input/Digital output module DIQ 16x24VDC/0.5A 8xM12 (6ES7143-5AH00-0BA0)
Equipment Manual, 08/2021, A5E38688112-AD
Configuration modes for digital inputs/outputs
X81 Loop-through of supply voltages
X30 Infeed of the ET-Connection
X31 Loop-through of the ET-Connection
1L+ Supply voltage 1L+ (non-switched)
1M Ground 1M (non-switched)
2L+ Load voltage 2L+ (switched)
2M Ground 2M (switched)
1U 24 V encoder supply
S
2U 24 V encoder supply
S
DIQ Input/output signal
n
DIQ LEDs channel status (0..15) (green)
DIAG Diagnostic status LED (red/green)
PWR LED supply voltage 2L+ (green)
3.2 Wiring
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