plc program
Implementation calls the system real-time clock clock instructions or according to the need to set the clock, monitoring of the operation of the control system, operation records and real-time time control and is very convenient.Clock instructions there are two: read the real time clock and set the real time clock
pulse output (PLS) instructionsPulse output (PLS) function: enabling effective, check for pulse output (Q0.0 or Q0.1) the special memory (SM), and thenSpecial memory bit pulse action defined
PID command: enables effective, according to the parameters table (TBL) of input measured values, control set value and calculation of PID parameters PID (1) eight PID command can be used in your program, number 0-7, respectively, cannot be repeated. (2) to enable the ENO = 0 error conditions: 0006 (indirect address), SM1.1 (overflow, parameter start addresses or … Continue reading PLC PID instruction
LD I0.0 EU ATCH INT_0, 21 ENI LDN M0.0 A I0.0 TON T32, +1000 LD T32 = M0.0 LD I0.0 ED DTCH 21 DISI INT0 LDN Q0.0 = Q0.0
Bytes read instruction immediately (MOV-BIR) reads the actual input IN the 1-byte values, and write OUT the result as the specified storage unit, but the input image register has not been updated.Bytes write command immediately read from the input IN the specified storage unit 1 byte numerical and written (in bytes) of physical output point … Continue reading byte Immediate Read instruction (MOV-BIR)
The highest byte lowest byte and byte swap instruction is used to exchange input word IN
MOV data transfer instructions, used to transmit a single byte, Word, doubleword, real LD I0.1 MOVW VW10, VW100Data block transfer instructions from the address entered IN the first n data sent to the output address start OUT n unit n data type for the range 1 to 255,N: bytes LAD STL LD I0.0 BMB VB20 ，VB100，4
(1) understanding PLCRecord using the PLC model, input and output points, observe hosts Panel structure and the connections between PLC and PC machines.(2) power on (turn on the PC and PLC) and create a new project.² using the menu command "file" → "new" or new item shortcut buttons.(3) inspect the operation STEP7-Micro/WIN PLC and PC … Continue reading STEP 7-Micro / WIN PLC programming software user training
Editor for the export program to STEP beyond 7-Micro/WIN 32, you can use the "export" command to create the ASCII text file. The default file name extension for "•" awl ", you can specify any file name. Program only successfully compile can execute "export" operations. "Export" command does not allow you to export data. Open … Continue reading STEP 7-Micro / WIN 32 export file
PLC ONE 