SM 1221 digital input
1 Connect “-†to “M†for the sink input (as shown) and “+†to “M†for the source input
SM 1222 digital output
The SM1222 DQ 8 relay switching module uses a common terminal to control two circuits: a normally closed contact and a normally open contact.
For example, if "0" is output, when the output point is disconnected, the common terminal (0L) is connected to the normally closed contact (.0X) and disconnected from the normally open contact (.0). When the output point is turned on, the common terminal (0L) is disconnected from the normally closed contact (.0X) and connected to the normally open contact (.0).
SM 1223 Digital Input/Output
1 Connect the load to the “-†terminal for the sink input (as shown) and the load to the “+†terminal for the source input
The SM 1223 also has a module for AC voltage input and relay output as follows:
SM 1223 DI 8 x 120/230 VAC, DQ 8 x relay (6ES7 223-1QH32-0XB0)
I/O can be added to the CPU via the signal board (SB, Signal Board). Provides a low-cost and efficient extension of all SIMATIC S7-1200 controllers while maintaining the original space, with the SB connected to the front of the CPU.
SB 1221 200KHZ digital input wiring
1 only supports source input
SB 1222 200KHZ digital output wiring
1 Connect the load to the “-†terminal for the source output (as shown) and the load to the “+†terminal for the sink output
SB 1223 200KHZ digital input / output wiring
1 only supports source input
2 Connect the load to the “-†terminal for the source output (as shown); connect the load to the “+†terminal for the sink output
SB 1223 digital input / output wiring
1 only supports missing input
Source/sink input wiring instructions
Signal board that supports source input:
6ES7 221-3BD30-0XB0
6ES7 221-3AD30-0XB0
6ES7 223-3BD30-0XB0
6ES7 223-3AD30-0XB0
Signal board that supports missing input:
6ES7 223-0BD30-0XB0
Signal template supporting source input:
6ES7 221-1BF32-0XB0
6ES7 221-1BH32-0XB0
6ES7 223-1PH32-0XB0
6ES7 223-1PL32-0XB0
6ES7 223-1BH32-0XB0
6ES7 223-1BL32-0XB0
Signal templates that support missing input:
6ES7 221-1BF32-0XB0
6ES7 221-1BH32-0XB0
6ES7 223-1PH32-0XB0
6ES7 223-1PL32-0XB0
6ES7 223-1BH32-0XB0
6ES7 223-1BL32-0XB0
Summary of digital input signal types: CPU integrated input points and all input points of the signal template support both the sink input and the source input, while the input point of the signal board only supports one of the source input or the sink input. .
See the template wiring diagram for the sink type input and the following figure for the source type input wiring.
Source/sink output wiring instructions
Signal board supporting source output:
6ES7 222-1AD30-0XB0
6ES7 222-1BD30-0XB0
6ES7 223-3AD30-0XB0
6ES7 223-3BD30-0XB0
6ES7 223-0BD30-0XB0
All transistor output signal modules that support source output only support source output and do not support sink output.
Signal board that supports leaky output:
6ES7 222-1AD30-0XB0
6ES7 222-1BD30-0XB0
6ES7 223-3AD30-0XB0
6ES7 223-3BD30-0XB0
Digital output signal type, only 200 KHZ signal board output supports both sinking and source output. Other signal boards, signal modules and CPU integrated transistor outputs only support source output.
common problem
Why is the SM1223 connected, the signal output channel indicator is also on, but there is no voltage output?
A: The S7-1200 expansion module output channel indicator power is provided by the bus, but the signal output requires module power supply.
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