Common PLC and touch screen wiring method - Database & Sql Blog Articles

SMD Aluminum Electrolytic Capacitor

Brand AVX TPSE226M035R0125 - Low Impedance Tantalum Capacitor, AVX 22

Electronic Scale Crystal Oscillator, 3.2*2.5mm 3225, 16M (16.000MHZ), 12PF, 10PPM, 20PPM, 30PPM

Huaqiang Square Crystal Original Spot Stock

Siemens TP27-6 Touch Screen and Computer Connection

The 0 port address is set to 2, port 1 is set to 3 on the PLC. Port 1 is connected to the TP27, and the touch screen's remote address is configured as 3. Make sure the baud rate matches accordingly.

Siemens TP270-6 Touch Screen Connection

• 1. Program download via 232 communication with a microcomputer
• 2. Pin configuration: 2 & 3, 4 & 6, 7 & 8 are directly connected; pin 5 is left floating; pins 1 and 9 are also floating.
• 2. Connecting to the S7-200

One method uses an MPI cable with 6 connectors of type 6ES7922-OBA12-DXA0, connected through a PROFIBUS cable in the middle. This setup offers strong interference resistance and is highly recommended.

Another contingency plan involves direct connections: pins 2, 3, 5, and 8 are directly wired. At the same time, the corresponding communication protocol, address, and baud rate should be unified using the appropriate software.

Production of OMRON PLC Communication Cable

PC (9D Mother) to PLC (9D Male):

• Pins 2 and 3 are directly connected
• Pin 5 is connected to pin 9
• On the PC side, pins 4 and 6 are shorted, and pins 7 and 8 are shorted
• On the PLC side, pins 4 and 5 are shorted