The main products

Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, machinery, electronics, automobile manufacturing, tobacco, plastics machinery, electric power, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution and so on.

PP825 3BSE042240R1 Touch screen

Pressing keyand key W simultaneously takes you to the monitor program of the PLC. This makes available certain basic functions at the monitor level to the user. If you are in the monitor program, you can switch back to the operating program of the PLC by enteringand W again (see also chapter Monitor functions)This mode permits the user to check the wiring of his I/O signals from the PLC through to the process in order to ensure that the wiring is correct. After starting the user program, it is not executed. Only the I/O signals planned in the program are operated, i.e. the input signals are read in and the output signals are brought out. By actuating limit switches etc., it is possible to check whether the signals arrive under the declared designation in the PLC. By setting outputs in targeted manner, it is possible to check whether the signals arrive at the correct point in the process. Command Z or ZD can be used to display the required I/O variables in the PLC. Command ”EA” can also be entered with the program running. In this case, the mode does not take effect until the start of the next program cycle.

Single–step mode ON

After starting the program, only one sentence or one block is executed and the program stops after each assignment, RIGHT BRACKET and at the end of each block. Command Z can be used to display variable values. Command ”ES” can also be entered with the program running. In this case, the mode does not take effect until the start of the next program cycle. Advancing by one step: If you enter a semicolon, the program runs to the next breakpoint after expiry of the cycle time and displays the program address and the command at this address. If the next breakpoint is not reached after a specific period, owing to a long cycle time, the display operation can be aborted by enteringC if required. Single–step mode is deactivated, i.e. the user program continues to run normally as of the current breakpoint.

Single–cycle mode ON

When the program is started, the program stops at the end of the program. Command ”EZ” can also be entered with the program running. The mode does not come into effect until the start of the next program cycle. Advancing by one program cycle: If a semicolon is entered, the program is run through once after expiry of the cycle time and displays the program address and the command at this address (!PE). If the next breakpoint is not reached after a specific period, owing to a long cycle time, the display operation can be aborted by enteringC if required.

On the PLC, the user can ”force” input signals and output signals. This means that values are preset for I/O signals by the user. The PLC then operates with the force values instead of the real input signals. In turn, the PLC issues the force values to the output devices and not the output signals computed in the PLC program. The force values apply until forcing is cancelled for individual I/O signals or for all I/O signals. Both the values supplied by the input devices and the values assigned to outputs in the PLC program thus have no effect during forcing. Forcing can be applied both to binary I/O signals and to word I/O signals.