How to use CIMON PLC Device Memory
2015.07.27

Q. How to use CIMON PLC Device Memory? 

 

 

 A. CIMON PLC uses 17 differently named devices.  

     Each device has its own symbol and is denoted by a capital character.   

  

       

  

X Device (Bit / Input) 

  

– X device is an input contact that receives a signal from the input module. 

– It accepts the signal from the input device such as a push button switch or limit switch. 

– Since the input status of X device is stored inside the PLC, a user can use A and B contacts.  

– If used as a word type, X device can be used according to the bit device’s word usage. 

– It is a read-only device that a user cannot enter a value. 

– X Device Allocation for PLC modules (Input and special modules) other than CPU: 

 

1.          PLC card occupies 16 points (1 Word). 

2.          Input card with 16 points or less: occupies 16 points (1 Word). 

3.          Input card with 32 points: occupies 32 points (2 Word). 

4.          Special cards other than input cards occupy 16 points (1 Word).  

 

Example) 

 

 

Turning on X00 device will output Y20.    

 

 

 

  Y Device (Bit / Output) 

 

– Y device is an output contact that delivers the operation result to output devices such as solenoid valves, motors and lamps. 

– If used as a word type, Y device can be used according to the bit device’s word usage.  

– Y device can only use and output Contact A. 

– Y Device Allocation for PLC modules (Output and special modules) other than CPU: 

 

1.         PLC card occupies 16 points (1 Word). 

2.         Output card with 16 points or less: occupies 16 points (1 Word). 

3.         Output card with 32 points: occupies 32 points (2 Word). 

4.         Special cards other than output cards occupy 16 points (1 Word).

 

Example)

 

 

Turning on X00 device will output Y20.

 

 

 

 

M Device (Bit / Internal Auxiliary Relay) 

 

– M device is an internal input and output digital device that cannot output the operation result to external devices. But the output in connection with I/O contacts can be made possible. 

– It can be used in applications such as intermediate data storage, virtual I/O and word data storage. 

– M device can use Contact A and B.

  

Example)

 

 

  

Turning on X00 device will turn on M20. SET instruction keeps M20 ON even if X00 turns OFF.

 

 

 

  

L Device (Bit / Link Relay) 

 

 L device can be used as a special contact for computer link and data link modules. 

– If not used as a link, L device can be used as same as M device. 

– If used as a word type, L device can be used according to the bit device’s word usage.

 

Example)

 

     

Turning on L00 device will send Frame No. 0 of the
Program ID No. 1 and saves the sending result in M100 device.



  

* For the rest of the 13 PLC Devices, please refer to the attached PDF file.