More than 50,000 candidates will take the autumn college entrance examination in Shanghai this year, and 1 1000 candidates will take the senior high school entrance examination. Chen Qun introduced that according to the current situation of epidemic prevention and control, on the basis of listening to the opinions of relevant departments, experts, middle school principals, representatives of teachers and students in grade three and parents, after careful study and approval by the Ministry of Education, the following adjustments were made:
1. Before the big exam, the necessary time should be reserved for the senior three and senior two students who take the grade exam to study at school.
2. Leave a certain time interval between the grade examination and the autumn unified examination.
3. Make the examination arrangement more operable.
¢Ù Question: How to use the analog/digital input/output module of Siemens plc200?
There is a wiring diagram in the product package of the module. After wiring connectio