This theme may be out of date. Run the support tool in the AdminCP to restore the default theme. Sign in to follow this Followers 0. CQM1 cpu 21 cx programmer 6. Share this post Link to post Share on other sites. Make sure you have the correct com port selected. You should get back the same string. As long as CX-Supervisor is not running it cannot block the serial port. But if you had succesful communication with CX-Supervisor you could check the project's device settings to see what the communication parameters are and match them in CX-Programmer.
Let us know which version CX-Programmer you are running then we can redirect you to a manual. As for the CQM1 series, here's some documentation to start with. You will find the dipswitch details in section of the operation manual. Heres a picture log of all the things i can change but i can get connection but cant do anything it look like theres a program in the plc i can download it but cant upload a new one i cant get any connection with 7 even 2 but can speak with 8 even 1 please anyone that can see anything wrong hope you guys can help me.
Im a little desprate right now. If you are getting echo back using Hyperterminal, then your cable should be good. Screen shots of Hyper Terminal setup port, baud, etc and screen shots of CX Programmer communications setup Network Type, port, baud, etc.
Header too short is from Syswin. Try changind from 1 to 1 to 1 to N for your communications or back the other way. In Syswin IO think you change the uprions in the communications setup. I have not used Syswin for a number of years now and do not even have it on my computer anymore.
It probably will not run on Vista anyway. Try turning the PLC to stop before clearing memory areas. If the program is the same as the one in the screen shots just modified, CX-P will never let you download it.
Every rung that has a red line at the left has a problem. First off remove all the NOP rungs. Then fix all the other rungs with red lines down the left hand side. Its old and of no use to me Ill like to clear all memory and start on a fresh new program but i cant clear the memory "se screen shots" CX-P doesnt Auto connect I cant edit the program Any thing im missing for clearing program "Maybee some of the dip swithes are set wrong??
Any possibility you have a handheld programmer available? The handheld would allow you to clear memory. Next thought would be to remove all power and remove the battery overnight. Somewhat crude, but it should work. Hope this will help. Can you simply create a new project that has only an end instruction, and then download that to the PLC? DIP Switch 1 is a memory protect switch. Make certain that it is off. Memory Card is a possibility. Card can be removed. This would prevent program from being loaded at power up.
Good point. The basic functions of these programming consoles are identical. Addressing coding of input, output and intermediate variables and the definition of some logic instructions are presented below. Most instructions have at least one associated operand. Operands provide information regarding the execution of an instruction. They are sometimes entered as real numeric values but generally correspond to zone channel addresses or to bits containing data to be used.
A ladder diagram consists of a down line on the left side with lines branching out to the right. The line on the left is called the bus bar. The branch lines are called the instruction lines. Along the instruction lines are the conditions leading to further instructions on the right side. The logical combinations of these conditions determine when and how the instructions on the right are executed.
A ladder diagram is shown below:. Each condition in a ladder diagram is ON or OFF depending on the state of the operand bit assigned to it. The mnemonic code provides exactly the same information as the ladder diagram but in a form that can be entered directly into the PLC. You can program directly in mnemonic code but this is not recommended in the case of complex programs. Whatever the programming device, the program is stored in memory in mnemonic form, hence the importance of this code.
The program is presented in the program memory in the form of addresses. Each address contains an instruction and all operand data and operands necessary for that instruction. Some instructions do not require operands and others up to 3 operands.
Program memory addresses start at and run until capacity is exhausted. Each of these instructions requires a line of mnemonic code. When AND and OR instructions are combined in more complex schemes, they can sometimes be viewed individually, with each instruction performing a logical operation on the condition and the state of the operand bit. In more complicated diagrams, however, it is necessary to consider the logic blocks before being able to determine the execution condition of the final instruction.
These instructions are used to check the state of the designated operand bit according to the execution condition. The last instruction in a simple program is END. When the CPU scans the program, it executes all instructions up to the first END instruction and returns to the start of the program to restart execution. Although an END instruction can be placed anywhere in the program, which is sometimes done during debugging, no instruction beyond END will be executed.
The number following the END instruction in mnemonic code is its function code, used when entering most instructions into the API.
The END instruction does not need any operands and no condition can be placed on the same line. If there is no END instruction in the program, the program is not executed. Logic block instructions do not correspond to any specific condition on the ladder diagram but describe relationships between logic blocks. The two logic blocks appear in dotted lines. This example shows. When determining the logic instructions necessary for coding a diagram, it is sometimes necessary to divide the latter into large blocks and then in turn divide these blocks to arrive at logic blocks which can be coded without forming instructions into logic blocks.
These blocks are then coded by combining the small blocks first and then the larger blocks. AND LOAD or OR LOAD is used for the combination of blocks: they always combine the last two execution conditions, whether they result from a single condition, from logical blocks or from previous logical block instructions. In complicated diagrams, the blocks are coded starting from the top left and then going down. The following diagram should be split into two blocks and each block into two other blocks before coding.
If several right-hand instructions are executed with the same execution condition, they are coded successively after the last one. In the following example, the last instruction line contains an additional instruction corresponding to an AND with IR When an instruction line splits into two or more other branch lines, it is sometimes necessary to use branches or TR bits to maintain the run condition that existed at the branch.
In this example, TR 0 and TR 1 are used to store the execution conditions at the branch point. All of these instructions appear at the end of an instruction line and have a bit address as an operand. Neither of these two instructions affects the state of its operand bit when the execution condition is OFF. KEEP is used to maintain the state of the operand bit resulting from two execution conditions. To do this, KEEP is connected to two instruction lines.
The unlock bit takes priority over the lock bit. STIM —— is used to control the tempos.
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