描述

1756-RM2? 規(guī)格參數(shù)工業(yè)計(jì)算機(jī)

1756-RM2規(guī)格參數(shù)工業(yè)計(jì)算機(jī)只需一個(gè)普通網(wǎng)卡即可通過以太網(wǎng)LAN從PLC主站接收數(shù)據(jù)。?PLC主張由一臺(tái)AC500系列PLC和相應(yīng)的外圍設(shè)備組成，并放置在中央控制室內(nèi)。?PLC主站從分布式I / O接收數(shù)據(jù)，執(zhí)行相關(guān)處理和控制，并通過標(biāo)準(zhǔn)工業(yè)以太網(wǎng)TCP / IP通信模塊（TB521-ETH）以10 mbit / m的傳輸速率將其傳輸?shù)焦I(yè)控制計(jì)算機(jī)s，介質(zhì)是雙重屏蔽的。

中央處理器（CPU）由一個(gè)控制器、一個(gè)運(yùn)算器和一個(gè)寄存器組成，它們集成在一個(gè)芯片中。CPU通過數(shù)據(jù)總線、地址總線、控制總線和電源總線與存儲(chǔ)器、輸入輸出接口、編程器和電源相連。1756-RM2規(guī)格參數(shù)

1756-RM2規(guī)格參數(shù)1.?編程操作

（1）方案編制。檢查PLC和計(jì)算機(jī)之間的連接是否正確，計(jì)算機(jī)的RS232C端口是否連接到PLC以及的范圍線和轉(zhuǎn)換器連接：保持PLC處于“關(guān)機(jī)”狀態(tài)；計(jì)算機(jī)和PLC上有電源。

（2）編程操作。

1打開GX Developer編程軟件，創(chuàng)建一個(gè)新項(xiàng)目并命名。

（2）使用梯形圖編程的方法，編輯并保存如圖1所示的梯形圖程序。

（3）程序的傳送。

程序的編寫。將編輯后的程序?qū)懭隤LC用戶內(nèi)存中，并進(jìn)行檢查。

2節(jié)目閱讀。?PLC用戶存儲(chǔ)器中的程序通過[Read In]操作讀入計(jì)算機(jī)，然后進(jìn)行檢查。

（3）程序檢查。在檢查上述程序的過程中，只有當(dāng)計(jì)算機(jī)兩端的程序相對(duì)正確時(shí)，才能認(rèn)為程序傳輸正確，否則應(yīng)查明原因并重新傳輸。

2.?運(yùn)行操作

程序傳輸?shù)絇LC用戶內(nèi)存后，程序可按以下方式運(yùn)行。

1根據(jù)梯形圖程序，將PLC的輸入/輸出連接到部件的輸入信號(hào)。?PLC的輸入/輸出編號(hào)和描述如表1所示。

（2）打開PLC操作開關(guān)，PLC面板上的運(yùn)行燈指示程序已投入運(yùn)行。

控制程序應(yīng)與控制程序相結(jié)合，以操作輸入信號(hào)，并觀察不同輸入狀態(tài)下輸入/輸出指示燈的變化。如果輸出指示燈的狀態(tài)與程序控制要求一致，則表示程序正常運(yùn)行。

?1、常見的故障現(xiàn)象

當(dāng)PLC的rs-485端口通過非隔離的pc / ppi電纜連接到計(jì)算機(jī)時(shí)，plc和plc之間的連接，或plc和逆變器之間的通信，觸摸屏等，通訊端口損壞。更常見的損害賠償如下：

（1）R1或R2燒壞，Z1、Z2、SN75176完好。這是由于通過R1或R2、橋式整流器、Z1或Z1對(duì)地的瞬態(tài)干擾電流較大，Z1和Z2能承受*10A電流的沖擊，電流對(duì)R1或R2產(chǎn)生的瞬態(tài)功率為102*10=1000W，當(dāng)然會(huì)燒壞。

（2）sn75176損傷，R1，R2，Z1，Z2均處于良好狀態(tài)。這可能是由于靜電沖擊或暫態(tài)過電壓速度比Z1，Z2動(dòng)作速度快，靜電無處不在，只有人的模式也會(huì)產(chǎn)生±15 kV的靜電。

（3）z1或z2，sn75176損壞，r1和r2完好無損。這可能是由于高電壓和低電流瞬態(tài)干擾電壓擊穿z1或z2和sn75176。由于電流小且產(chǎn)生時(shí)間短，因此r1和r2不會(huì)燃燒。

2、故障的原因分析

通過1中的分析可知，造成PLC接口損壞的主要原因是瞬態(tài)過電壓和靜電。瞬態(tài)過電壓和靜電產(chǎn)生的原因是多方面的。例如，由于PLC中的24V電源和5V電源為公共接地，當(dāng)與其它設(shè)備混合時(shí)，24V電源的輸出端可能會(huì)引起接地電位的變化。共模電壓出允許范圍。因此，EIA-485標(biāo)準(zhǔn)要求每個(gè)RS485接口的信號(hào)通過低電阻線連接，以確保每個(gè)節(jié)點(diǎn)的接地電位相等，并消除接地循環(huán)。

（1）當(dāng)未隔離的連接電纜接入線路時(shí)，在兩端具有不等電位的電路中存在許多電感、電容和其他器件，因此在插拔時(shí)不可避免地會(huì)出現(xiàn)瞬態(tài)過電壓或過電流?；谠摽紤]，當(dāng)通信連接器被插入時(shí)，設(shè)備被盡可能地切斷。

（2）連接到rs-485總線的其他設(shè)備產(chǎn)生的瞬態(tài)過電壓或過電流也會(huì)流入plc。連接到總線的設(shè)備越多，產(chǎn)生的瞬態(tài)過電壓就越多。

（3）雷電是通信線路長(zhǎng)或戶外架空線路時(shí)必須考慮的干擾。雷電是主要的自然干擾源。閃電造成的干擾可以傳播到幾千公里以外。雷電干擾的時(shí)域波形疊加在隨機(jī)脈沖背景下的一個(gè)大尖峰脈沖上。這種能量密集的尖峰脈沖不可避免地會(huì)引起線路過電壓，損壞與PLC等通信網(wǎng)絡(luò)相連的設(shè)備。應(yīng)避免或減少損壞程度和損失。

1756-RM2? 規(guī)格參數(shù)工業(yè)計(jì)算機(jī)

1756-RM2 Specifications Industrial computers need only a common network card to receive data from the PLC master station over an Ethernet LAN. The PLC is composed of an AC500 series PLC and the corresponding peripheral equipment, and is placed in the central control room. The PLC master station receives data from distributed I/O, performs related processing and control, and transmits it to the industrial control computer s at a transmission rate of 10 mbit/m via the standard Industrial Ethernet TCP/IP communication module (TB521-ETH), the media is doubly shielded. Twisted

The central processing unit (CPU) consists of a controller, an arithmetic unit, and a register, which are integrated into a chip. The CPU is connected to the memory, input/output interface, programmer and power supply via the data bus, address bus, control bus and power supply bus. 1756-RM2 Specifications

1756-RM2 Specifications 1. Programming operations

(1) Program preparation. Check that the connection between the PLC and the computer is correct, that the RS232C port of the computer is connected to the PLC and that the range line and converter are connected: keep the PLC in the “off” state; There is a power supply on the computer and PLC.

(2) Programming operation.

1 Open the GX Developer programming software, create a new project and name it.

(2) Use the ladder diagram programming method to edit and save the ladder diagram program as shown in Figure 1.

(3) Transmission of the program.

Programming. The edited program is written into PLC user memory and checked.

2 Program reading. Programs In the PLC user memory are Read into the computer by the [Read In] operation and then checked.

(3) Program check. In the process of checking the above programs, only when the programs on both ends of the computer are relatively correct, can the program be considered to be correctly transmitted, otherwise the cause should be identified and re-transmitted.

2. Run the operation

After the program is transferred to the PLC user memory, the program can be run in the following manner.

1 Connect the input/output of the PLC to the input signal of the component according to the ladder diagram program. The input/output numbers and descriptions of PLC are shown in Table 1.

(2) Open the PLC operating switch, and the running light on the PLC panel indicates that the program has been put into operation.

The control program should be combined with the control program to operate the input signal and observe the change of the input/output indicator light in different input states. If the status of the output indicator is consistent with the program control requirements, it indicates that the program is running normally.

1. Common fault phenomena

When the PLC’s rs-485 port is connected to the computer through a non-isolated pc/ppi cable, the connection between the plc and the plc, or the communication between the plc and the inverter, the touch screen, etc., the communication port is damaged. More common damages are as follows:

(1) R1 or R2 is burnt out, Z1, Z2 and SN75176 are intact. This is because the transient interference current through R1 or R2, bridge rectifier, Z1 or Z1 to the ground is large, Z1 and Z2 can withstand the impact of *10A current, the current generated by R1 or R2 transient power is 102*10=1000W, of course, it will burn out.

(2) sn75176 damage, R1, R2, Z1, Z2 are in good condition. This may be due to static shock or transient overvoltage speed faster than Z1, Z2 operation speed, static electricity everywhere, only the human mode will produce ±15 kV static electricity.

(3) z1 or z2, sn75176 damaged, r1 and r2 intact. This may be due to high voltage and low current transient interference voltage breakdown z1 or z2 and sn75176. Due to the small current and short generation time, r1 and r2 do not burn.

2. Cause analysis of failure

According to the analysis in 1, the main causes of PLC interface damage are transient overvoltage and static electricity. There are many reasons for transient overvoltage and static electricity. For example, because the 24V power supply and 5V power supply in the PLC are common ground, the output of the 24V power supply may cause a change in the ground potential when mixed with other equipment. Common-mode voltage out allowable range. As a result, the EIA-485 standard requires signals from each RS485 interface to be connected via low-resistance wires to ensure equal ground potentials at each node and eliminate grounding cycles.

(1) When the unisolated connection cable is connected to the line, there are many inductors, capacitors and other devices in the circuit with unequal potentials at both ends, so there will inevitably be transient overvoltage or overcurrent when plugged in and out. Based on this consideration, when the communication connector is inserted, the device is cut off as much as possible.

(2) Transient overvoltage or overcurrent generated by other devices connected to the rs-485 bus will also flow into the plc. The more devices connected to the bus, the more transient overvoltages are generated.

(3) Lightning is a interference that must be considered when communication lines are long or outdoor overhead lines. Lightning is the main source of natural interference. The disturbance caused by lightning can travel thousands of kilometers. The time domain waveform of lightning interference is superimposed on a large spike pulse in a random pulse background. This energy-dense spike will inevitably cause line overvoltage and damage equipment connected to communication networks such as PLCS. Damage and loss should be avoided or minimized.

公司介紹：
成都陽光不斷創(chuàng)新致力于提升停產(chǎn)的自動(dòng)化零件供應(yīng)水平，無論客戶身處何地，無論所需配件多么稀有，我們總能將客戶與所需產(chǎn)品緊密連接 ，成都陽光零部件覆蓋廣泛。
急切需要自動(dòng)化或控制零件？ 全新、Used和已停產(chǎn)的自動(dòng)化機(jī)械零件的全球供應(yīng)商。
客戶支持快速響應(yīng)
合作伙伴網(wǎng)絡(luò)橫跨各個(gè)大洲
全球合作伙伴網(wǎng)絡(luò)




Company Introduction:
Chengdu Sunshine Xihe Co., Ltd. specializes in one-stop procurement consulting for imported industrial spare parts, offering original equipment and professional discontinued parts services. We are committed to providing efficient and reliable automation solutions for our customers. Customer support fast responseThe network of partners spans all continentsGlobal partner networkAlways achieve more delivery, be it parts, service or speed



始終實(shí)現(xiàn)更多的交付，無論是零件、服務(wù)還是速度