Hardware devices: CP1H-XA40DT-D (PLC), CP1W-MAD42 (analog input / output module), USB
Cable, S8VK-C06024 (switching power supply)
Software: CX-Programmer
Case Description: Use the CP1H-XA40DT-D CP1W-MAD42 module to implement an input acquisition output simulation
The function of the amount.
1. System overview, hardware construction and wiring
(1) Connect the PLC to DC24V DC power supply, USB cable and computer connection, as shown in Figure 1-1:
(2) Connect the CP1W-MAD42 to CP1H, as shown in Figure 1-2:
2. Steps
(1) Hardware settings:
a. The analog module CP1W-MAD42 terminal is arranged as shown in Figure 2-1:
b. The wiring of the analog module is shown in Figure 2-2:
c. CP1W-MAD42 Input Address Assignment Description: The analog range is set in n + 1, n + 2, analog quantity
The values of 1 to 4 are kept in M + 1, M + 2, M + 3, M + 4CH, and the value of the analog output 1 to 2 is saved.
In N + 1, N + 2CH. As shown in Figure 2-3:
Note: n is the last output word allocated to the CPU unit or the last extension unit, and m is assigned to the CPU.
The final input word of the unit or the last extension unit.
The address assignments used in this case are shown in the table below:
(2) Software operation:
a. MAD42 settings are written through the range of range, as shown in Figure 2-4:
Range code settings are shown in Figure 2-5:
This case uses analog input 1: -10V ~ + 10V, use average; analog input 3: 4-20mA,
Use averaging; analog output 1: -10V ~ + 10V; analog output 2: 4-20mA; the number of writes written is shown in Figure 2-6:
That is, the value of 880c HEX is assigned in 102, and the value is assigned 8C0e HEX in 103.
b. Programming
The program is shown in Figure 2-7:
Note: From the start of the power switch to the initial conversion data to save to the input word, it takes 2 cycles 50ms.
about. Therefore, write the TIM command, waiting for the conversion data when the power is turned on, starting running synchronization
Effective procedure. After completing the initialization process, the analog input data will change to 0000.
c. Setup completion, transfer the settings to the PLC, PLC power off, and set effective;
Transfer the program to the PLC.
3, phenomena and conclusions:
(1) Switch to monitor mode
(2) Write the set value -6000 (-10V), & 0 (0V), & 6000 (10V), can be seen in 102CH
To the mode C. The value read by the proposed input 1 is shown in Figure 3-1;
Write the set value & 0 (4mA), & 6000 (12mA), & 6000 (120mA) at 103CH,
See the value read by the analog input 1 is as shown in Figure 3-1
The value of the input channel and the output of the output are basically consistent.
4, pay attention:
(1) When the analog input module is used under current input, the voltage input terminal and the current input terminal must be
Sub short circuit.
(2) When the input range is set to 1 to 5V and the voltage drops below 0.8V or when the input range is set to 4 ~ 20mA
And when the current drops below 3.2mA, the disconnection detection function will be enabled. Conversion after the disconnection detection function is enabled
data
Will be set to 8,000 HEX.
(3) When the input exceeds the specified range, the AD conversion data will remain unchanged at the lower limit or the upper limit.
(4) The resolution of the CP1W-MAD42 module is 12000.
(5) If the input is not used is also set, just like the inputs 2, 4 in the case, write 0 to correspond.
(6) For analog input, when the mean calculation bit is set to 1, the average value of the last 8 inputs (mobile
The average value will be output as a conversion data.
(7) Not used, short contact "+" and "- (COM)" terminals. Read the full article, in the original title: [Omron analog] CP1W-MAD42 uses the function of entering the acquisition and output simulation
Article Source: [Micro Signal: PLCFANS, WeChat public number: PLC enthusiasts] Welcome to add attention! Please indicate the source of the article.
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